Home / 39,158.05-54,037.59-21,252.90

Finding the Fourth Proportional to 39,158.05, 54,037.59 and 21,252.90

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Solution

The fourth proportional to 39,158.05, 54,037.59 and 21,252.90 is: 29,328.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,158.05 : 54,037.59 = 21,252.90 : x
  2. Step 2: Convert to fraction form
    39,158.05/54,037.59 = 21,252.90/x
  3. Step 3: Cross multiply
    39,158.05x = 54,037.59 × 21,252.90
  4. Step 4: Simplify right side
    39,158.05x = 1,148,455,390.25
  5. Step 5: Solve for x
    x = 1,148,455,390.25/39,158.05
  6. Step 6: Final answer
    x = 29,328.72

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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.