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Finding the Fourth Proportional to 15,308.62, 21,125.62 and 8,593.72

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Solution

The fourth proportional to 15,308.62, 21,125.62 and 8,593.72 is: 11,859.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,308.62 : 21,125.62 = 8,593.72 : x
  2. Step 2: Convert to fraction form
    15,308.62/21,125.62 = 8,593.72/x
  3. Step 3: Cross multiply
    15,308.62x = 21,125.62 × 8,593.72
  4. Step 4: Simplify right side
    15,308.62x = 181,547,663.11
  5. Step 5: Solve for x
    x = 181,547,663.11/15,308.62
  6. Step 6: Final answer
    x = 11,859.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.