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Finding the Fourth Proportional to 29,374.92, 40,520.52 and 21,407.76

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Solution

The fourth proportional to 29,374.92, 40,520.52 and 21,407.76 is: 29,530.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,374.92 : 40,520.52 = 21,407.76 : x
  2. Step 2: Convert to fraction form
    29,374.92/40,520.52 = 21,407.76/x
  3. Step 3: Cross multiply
    29,374.92x = 40,520.52 × 21,407.76
  4. Step 4: Simplify right side
    29,374.92x = 867,453,567.24
  5. Step 5: Solve for x
    x = 867,453,567.24/29,374.92
  6. Step 6: Final answer
    x = 29,530.41

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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.