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Finding the Fourth Proportional to 15,614.76, 21,547.07 and 8,808.41

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Solution

The fourth proportional to 15,614.76, 21,547.07 and 8,808.41 is: 12,154.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,614.76 : 21,547.07 = 8,808.41 : x
  2. Step 2: Convert to fraction form
    15,614.76/21,547.07 = 8,808.41/x
  3. Step 3: Cross multiply
    15,614.76x = 21,547.07 × 8,808.41
  4. Step 4: Simplify right side
    15,614.76x = 189,795,275.08
  5. Step 5: Solve for x
    x = 189,795,275.08/15,614.76
  6. Step 6: Final answer
    x = 12,154.86

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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.