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Finding the Fourth Proportional to 29,870.40, 41,220.96 and 16,440.96

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Solution

The fourth proportional to 29,870.40, 41,220.96 and 16,440.96 is: 22,688.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,870.40 : 41,220.96 = 16,440.96 : x
  2. Step 2: Convert to fraction form
    29,870.40/41,220.96 = 16,440.96/x
  3. Step 3: Cross multiply
    29,870.40x = 41,220.96 × 16,440.96
  4. Step 4: Simplify right side
    29,870.40x = 677,712,154.52
  5. Step 5: Solve for x
    x = 677,712,154.52/29,870.40
  6. Step 6: Final answer
    x = 22,688.42

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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.