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Finding the Fourth Proportional to 14,988.80, 22,502.40 and 7,974.40

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Solution

The fourth proportional to 14,988.80, 22,502.40 and 7,974.40 is: 11,971.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,988.80 : 22,502.40 = 7,974.40 : x
  2. Step 2: Convert to fraction form
    14,988.80/22,502.40 = 7,974.40/x
  3. Step 3: Cross multiply
    14,988.80x = 22,502.40 × 7,974.40
  4. Step 4: Simplify right side
    14,988.80x = 179,443,138.56
  5. Step 5: Solve for x
    x = 179,443,138.56/14,988.80
  6. Step 6: Final answer
    x = 11,971.81

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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.