Home / 28,138.47-42,177.33-18,284.82

Finding the Fourth Proportional to 28,138.47, 42,177.33 and 18,284.82

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Solution

The fourth proportional to 28,138.47, 42,177.33 and 18,284.82 is: 27,407.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.47 : 42,177.33 = 18,284.82 : x
  2. Step 2: Convert to fraction form
    28,138.47/42,177.33 = 18,284.82/x
  3. Step 3: Cross multiply
    28,138.47x = 42,177.33 × 18,284.82
  4. Step 4: Simplify right side
    28,138.47x = 771,204,887.13
  5. Step 5: Solve for x
    x = 771,204,887.13/28,138.47
  6. Step 6: Final answer
    x = 27,407.49

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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.