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Finding the Fourth Proportional to 15,019.60, 22,502.40 and 7,211.20

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Solution

The fourth proportional to 15,019.60, 22,502.40 and 7,211.20 is: 10,803.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.60 : 22,502.40 = 7,211.20 : x
  2. Step 2: Convert to fraction form
    15,019.60/22,502.40 = 7,211.20/x
  3. Step 3: Cross multiply
    15,019.60x = 22,502.40 × 7,211.20
  4. Step 4: Simplify right side
    15,019.60x = 162,269,306.88
  5. Step 5: Solve for x
    x = 162,269,306.88/15,019.60
  6. Step 6: Final answer
    x = 10,803.84

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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.