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Finding the Fourth Proportional to 15,008.61, 20,711.67 and 8,294.35

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Solution

The fourth proportional to 15,008.61, 20,711.67 and 8,294.35 is: 11,446.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,008.61 : 20,711.67 = 8,294.35 : x
  2. Step 2: Convert to fraction form
    15,008.61/20,711.67 = 8,294.35/x
  3. Step 3: Cross multiply
    15,008.61x = 20,711.67 × 8,294.35
  4. Step 4: Simplify right side
    15,008.61x = 171,789,813.51
  5. Step 5: Solve for x
    x = 171,789,813.51/15,008.61
  6. Step 6: Final answer
    x = 11,446.08

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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.