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Finding the Fourth Proportional to 22,089.70, 30,444.42 and 15,353.74

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Solution

The fourth proportional to 22,089.70, 30,444.42 and 15,353.74 is: 21,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,089.70 : 30,444.42 = 15,353.74 : x
  2. Step 2: Convert to fraction form
    22,089.70/30,444.42 = 15,353.74/x
  3. Step 3: Cross multiply
    22,089.70x = 30,444.42 × 15,353.74
  4. Step 4: Simplify right side
    22,089.70x = 467,435,709.13
  5. Step 5: Solve for x
    x = 467,435,709.13/22,089.70
  6. Step 6: Final answer
    x = 21,160.80

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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.