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Finding the Fourth Proportional to 29,281.80, 40,409.08 and 15,853.17

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Solution

The fourth proportional to 29,281.80, 40,409.08 and 15,853.17 is: 21,877.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,281.80 : 40,409.08 = 15,853.17 : x
  2. Step 2: Convert to fraction form
    29,281.80/40,409.08 = 15,853.17/x
  3. Step 3: Cross multiply
    29,281.80x = 40,409.08 × 15,853.17
  4. Step 4: Simplify right side
    29,281.80x = 640,611,899.38
  5. Step 5: Solve for x
    x = 640,611,899.38/29,281.80
  6. Step 6: Final answer
    x = 21,877.47

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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.