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Finding the Fourth Proportional to 29,300.64, 40,434.92 and 15,871.92

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Solution

The fourth proportional to 29,300.64, 40,434.92 and 15,871.92 is: 21,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,300.64 : 40,434.92 = 15,871.92 : x
  2. Step 2: Convert to fraction form
    29,300.64/40,434.92 = 15,871.92/x
  3. Step 3: Cross multiply
    29,300.64x = 40,434.92 × 15,871.92
  4. Step 4: Simplify right side
    29,300.64x = 641,779,815.45
  5. Step 5: Solve for x
    x = 641,779,815.45/29,300.64
  6. Step 6: Final answer
    x = 21,903.27

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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.