Home / 18,315.97-27,472.05-12,430.66

Finding the Fourth Proportional to 18,315.97, 27,472.05 and 12,430.66

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Solution

The fourth proportional to 18,315.97, 27,472.05 and 12,430.66 is: 18,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.97 : 27,472.05 = 12,430.66 : x
  2. Step 2: Convert to fraction form
    18,315.97/27,472.05 = 12,430.66/x
  3. Step 3: Cross multiply
    18,315.97x = 27,472.05 × 12,430.66
  4. Step 4: Simplify right side
    18,315.97x = 341,495,713.05
  5. Step 5: Solve for x
    x = 341,495,713.05/18,315.97
  6. Step 6: Final answer
    x = 18,644.70

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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.