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Finding the Fourth Proportional to 19,842.57, 29,562.03 and 18,902.16

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Solution

The fourth proportional to 19,842.57, 29,562.03 and 18,902.16 is: 28,160.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,842.57 : 29,562.03 = 18,902.16 : x
  2. Step 2: Convert to fraction form
    19,842.57/29,562.03 = 18,902.16/x
  3. Step 3: Cross multiply
    19,842.57x = 29,562.03 × 18,902.16
  4. Step 4: Simplify right side
    19,842.57x = 558,786,220.98
  5. Step 5: Solve for x
    x = 558,786,220.98/19,842.57
  6. Step 6: Final answer
    x = 28,160.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.