Home / 39,281.88-54,209.52-21,377.28

Finding the Fourth Proportional to 39,281.88, 54,209.52 and 21,377.28

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Solution

The fourth proportional to 39,281.88, 54,209.52 and 21,377.28 is: 29,500.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,281.88 : 54,209.52 = 21,377.28 : x
  2. Step 2: Convert to fraction form
    39,281.88/54,209.52 = 21,377.28/x
  3. Step 3: Cross multiply
    39,281.88x = 54,209.52 × 21,377.28
  4. Step 4: Simplify right side
    39,281.88x = 1,158,852,087.71
  5. Step 5: Solve for x
    x = 1,158,852,087.71/39,281.88
  6. Step 6: Final answer
    x = 29,500.93

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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.