Home / 39,156.64-54,036.20-21,251.65

Finding the Fourth Proportional to 39,156.64, 54,036.20 and 21,251.65

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Solution

The fourth proportional to 39,156.64, 54,036.20 and 21,251.65 is: 29,327.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,156.64 : 54,036.20 = 21,251.65 : x
  2. Step 2: Convert to fraction form
    39,156.64/54,036.20 = 21,251.65/x
  3. Step 3: Cross multiply
    39,156.64x = 54,036.20 × 21,251.65
  4. Step 4: Simplify right side
    39,156.64x = 1,148,358,033.29
  5. Step 5: Solve for x
    x = 1,148,358,033.29/39,156.64
  6. Step 6: Final answer
    x = 29,327.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.