Home / 28,662.18-42,932.70-18,126.78

Finding the Fourth Proportional to 28,662.18, 42,932.70 and 18,126.78

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Solution

The fourth proportional to 28,662.18, 42,932.70 and 18,126.78 is: 27,151.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662.18 : 42,932.70 = 18,126.78 : x
  2. Step 2: Convert to fraction form
    28,662.18/42,932.70 = 18,126.78/x
  3. Step 3: Cross multiply
    28,662.18x = 42,932.70 × 18,126.78
  4. Step 4: Simplify right side
    28,662.18x = 778,231,607.71
  5. Step 5: Solve for x
    x = 778,231,607.71/28,662.18
  6. Step 6: Final answer
    x = 27,151.86

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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.