Home / 28,158.71-42,292.74-20,733.85

Finding the Fourth Proportional to 28,158.71, 42,292.74 and 20,733.85

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Solution

The fourth proportional to 28,158.71, 42,292.74 and 20,733.85 is: 31,141.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.71 : 42,292.74 = 20,733.85 : x
  2. Step 2: Convert to fraction form
    28,158.71/42,292.74 = 20,733.85/x
  3. Step 3: Cross multiply
    28,158.71x = 42,292.74 × 20,733.85
  4. Step 4: Simplify right side
    28,158.71x = 876,891,327.25
  5. Step 5: Solve for x
    x = 876,891,327.25/28,158.71
  6. Step 6: Final answer
    x = 31,141.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.