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Finding the Fourth Proportional to 15,004.80, 22,520.80 and 7,614.40

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Solution

The fourth proportional to 15,004.80, 22,520.80 and 7,614.40 is: 11,428.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.80 : 22,520.80 = 7,614.40 : x
  2. Step 2: Convert to fraction form
    15,004.80/22,520.80 = 7,614.40/x
  3. Step 3: Cross multiply
    15,004.80x = 22,520.80 × 7,614.40
  4. Step 4: Simplify right side
    15,004.80x = 171,482,379.52
  5. Step 5: Solve for x
    x = 171,482,379.52/15,004.80
  6. Step 6: Final answer
    x = 11,428.50

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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.