Home / 12,302,043.40-18,453,065.10-7,179,214.60

Finding the Fourth Proportional to 12,302,043.40, 18,453,065.10 and 7,179,214.60

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Solution

The fourth proportional to 12,302,043.40, 18,453,065.10 and 7,179,214.60 is: 10,768,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302,043.40 : 18,453,065.10 = 7,179,214.60 : x
  2. Step 2: Convert to fraction form
    12,302,043.40/18,453,065.10 = 7,179,214.60/x
  3. Step 3: Cross multiply
    12,302,043.40x = 18,453,065.10 × 7,179,214.60
  4. Step 4: Simplify right side
    12,302,043.40x = 132,478,514,380,670.47
  5. Step 5: Solve for x
    x = 132,478,514,380,670.47/12,302,043.40
  6. Step 6: Final answer
    x = 10,768,821.90

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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.