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Finding the Fourth Proportional to 38,591.79, 57,894.57 and 13,646.32

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Solution

The fourth proportional to 38,591.79, 57,894.57 and 13,646.32 is: 20,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,591.79 : 57,894.57 = 13,646.32 : x
  2. Step 2: Convert to fraction form
    38,591.79/57,894.57 = 13,646.32/x
  3. Step 3: Cross multiply
    38,591.79x = 57,894.57 × 13,646.32
  4. Step 4: Simplify right side
    38,591.79x = 790,047,828.48
  5. Step 5: Solve for x
    x = 790,047,828.48/38,591.79
  6. Step 6: Final answer
    x = 20,471.91

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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.