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Finding the Fourth Proportional to 38,612.34, 57,923.28 and 13,647.24

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Solution

The fourth proportional to 38,612.34, 57,923.28 and 13,647.24 is: 20,472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,612.34 : 57,923.28 = 13,647.24 : x
  2. Step 2: Convert to fraction form
    38,612.34/57,923.28 = 13,647.24/x
  3. Step 3: Cross multiply
    38,612.34x = 57,923.28 × 13,647.24
  4. Step 4: Simplify right side
    38,612.34x = 790,492,903.75
  5. Step 5: Solve for x
    x = 790,492,903.75/38,612.34
  6. Step 6: Final answer
    x = 20,472.55

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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.