Home / 20,547.96-28,358.88-15,257.88

Finding the Fourth Proportional to 20,547.96, 28,358.88 and 15,257.88

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Solution

The fourth proportional to 20,547.96, 28,358.88 and 15,257.88 is: 21,057.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547.96 : 28,358.88 = 15,257.88 : x
  2. Step 2: Convert to fraction form
    20,547.96/28,358.88 = 15,257.88/x
  3. Step 3: Cross multiply
    20,547.96x = 28,358.88 × 15,257.88
  4. Step 4: Simplify right side
    20,547.96x = 432,696,387.97
  5. Step 5: Solve for x
    x = 432,696,387.97/20,547.96
  6. Step 6: Final answer
    x = 21,057.88

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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.