Home / 10,345.35-15,499.80-8,486.40

Finding the Fourth Proportional to 10,345.35, 15,499.80 and 8,486.40

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Solution

The fourth proportional to 10,345.35, 15,499.80 and 8,486.40 is: 12,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.35 : 15,499.80 = 8,486.40 : x
  2. Step 2: Convert to fraction form
    10,345.35/15,499.80 = 8,486.40/x
  3. Step 3: Cross multiply
    10,345.35x = 15,499.80 × 8,486.40
  4. Step 4: Simplify right side
    10,345.35x = 131,537,502.72
  5. Step 5: Solve for x
    x = 131,537,502.72/10,345.35
  6. Step 6: Final answer
    x = 12,714.65

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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.