Home / 39,382.60-54,348.08-21,477.72

Finding the Fourth Proportional to 39,382.60, 54,348.08 and 21,477.72

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Solution

The fourth proportional to 39,382.60, 54,348.08 and 21,477.72 is: 29,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,382.60 : 54,348.08 = 21,477.72 : x
  2. Step 2: Convert to fraction form
    39,382.60/54,348.08 = 21,477.72/x
  3. Step 3: Cross multiply
    39,382.60x = 54,348.08 × 21,477.72
  4. Step 4: Simplify right side
    39,382.60x = 1,167,272,844.78
  5. Step 5: Solve for x
    x = 1,167,272,844.78/39,382.60
  6. Step 6: Final answer
    x = 29,639.30

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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.