Home / 22,385.19-30,884.18-12,947.07

Finding the Fourth Proportional to 22,385.19, 30,884.18 and 12,947.07

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Solution

The fourth proportional to 22,385.19, 30,884.18 and 12,947.07 is: 17,862.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,385.19 : 30,884.18 = 12,947.07 : x
  2. Step 2: Convert to fraction form
    22,385.19/30,884.18 = 12,947.07/x
  3. Step 3: Cross multiply
    22,385.19x = 30,884.18 × 12,947.07
  4. Step 4: Simplify right side
    22,385.19x = 399,859,575.62
  5. Step 5: Solve for x
    x = 399,859,575.62/22,385.19
  6. Step 6: Final answer
    x = 17,862.68

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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.