Home / 12,514,663.20-18,771,994.80-5,326,431.60

Finding the Fourth Proportional to 12,514,663.20, 18,771,994.80 and 5,326,431.60

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Solution

The fourth proportional to 12,514,663.20, 18,771,994.80 and 5,326,431.60 is: 7,989,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,514,663.20 : 18,771,994.80 = 5,326,431.60 : x
  2. Step 2: Convert to fraction form
    12,514,663.20/18,771,994.80 = 5,326,431.60/x
  3. Step 3: Cross multiply
    12,514,663.20x = 18,771,994.80 × 5,326,431.60
  4. Step 4: Simplify right side
    12,514,663.20x = 99,987,746,297,755.67
  5. Step 5: Solve for x
    x = 99,987,746,297,755.67/12,514,663.20
  6. Step 6: Final answer
    x = 7,989,647.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.