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Finding the Fourth Proportional to 29,138.40, 40,211.12 and 16,562.40

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Solution

The fourth proportional to 29,138.40, 40,211.12 and 16,562.40 is: 22,856.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.40 : 40,211.12 = 16,562.40 : x
  2. Step 2: Convert to fraction form
    29,138.40/40,211.12 = 16,562.40/x
  3. Step 3: Cross multiply
    29,138.40x = 40,211.12 × 16,562.40
  4. Step 4: Simplify right side
    29,138.40x = 665,992,653.89
  5. Step 5: Solve for x
    x = 665,992,653.89/29,138.40
  6. Step 6: Final answer
    x = 22,856.18

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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.