Home / 39,278.71-54,205.77-21,374.88

Finding the Fourth Proportional to 39,278.71, 54,205.77 and 21,374.88

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Solution

The fourth proportional to 39,278.71, 54,205.77 and 21,374.88 is: 29,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278.71 : 54,205.77 = 21,374.88 : x
  2. Step 2: Convert to fraction form
    39,278.71/54,205.77 = 21,374.88/x
  3. Step 3: Cross multiply
    39,278.71x = 54,205.77 × 21,374.88
  4. Step 4: Simplify right side
    39,278.71x = 1,158,641,829.06
  5. Step 5: Solve for x
    x = 1,158,641,829.06/39,278.71
  6. Step 6: Final answer
    x = 29,497.96

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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.