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Finding the Fourth Proportional to 15,306.70, 22,958.70 and 4,212.40

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Solution

The fourth proportional to 15,306.70, 22,958.70 and 4,212.40 is: 6,318.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.70 : 22,958.70 = 4,212.40 : x
  2. Step 2: Convert to fraction form
    15,306.70/22,958.70 = 4,212.40/x
  3. Step 3: Cross multiply
    15,306.70x = 22,958.70 × 4,212.40
  4. Step 4: Simplify right side
    15,306.70x = 96,711,227.88
  5. Step 5: Solve for x
    x = 96,711,227.88/15,306.70
  6. Step 6: Final answer
    x = 6,318.23

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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.