Home / 29,077.52-40,149.30-21,138.72

Finding the Fourth Proportional to 29,077.52, 40,149.30 and 21,138.72

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Solution

The fourth proportional to 29,077.52, 40,149.30 and 21,138.72 is: 29,187.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,077.52 : 40,149.30 = 21,138.72 : x
  2. Step 2: Convert to fraction form
    29,077.52/40,149.30 = 21,138.72/x
  3. Step 3: Cross multiply
    29,077.52x = 40,149.30 × 21,138.72
  4. Step 4: Simplify right side
    29,077.52x = 848,704,810.90
  5. Step 5: Solve for x
    x = 848,704,810.90/29,077.52
  6. Step 6: Final answer
    x = 29,187.66

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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.