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Finding the Fourth Proportional to 9,938.20, 14,885.70 and 9,722.20

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Solution

The fourth proportional to 9,938.20, 14,885.70 and 9,722.20 is: 14,562.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,938.20 : 14,885.70 = 9,722.20 : x
  2. Step 2: Convert to fraction form
    9,938.20/14,885.70 = 9,722.20/x
  3. Step 3: Cross multiply
    9,938.20x = 14,885.70 × 9,722.20
  4. Step 4: Simplify right side
    9,938.20x = 144,721,752.54
  5. Step 5: Solve for x
    x = 144,721,752.54/9,938.20
  6. Step 6: Final answer
    x = 14,562.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.