Home / 39,156.21-54,033.72-21,251.06

Finding the Fourth Proportional to 39,156.21, 54,033.72 and 21,251.06

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Solution

The fourth proportional to 39,156.21, 54,033.72 and 21,251.06 is: 29,325.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,156.21 : 54,033.72 = 21,251.06 : x
  2. Step 2: Convert to fraction form
    39,156.21/54,033.72 = 21,251.06/x
  3. Step 3: Cross multiply
    39,156.21x = 54,033.72 × 21,251.06
  4. Step 4: Simplify right side
    39,156.21x = 1,148,273,449.32
  5. Step 5: Solve for x
    x = 1,148,273,449.32/39,156.21
  6. Step 6: Final answer
    x = 29,325.45

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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.