Home / 22,615.28-31,210.08-12,543.05

Finding the Fourth Proportional to 22,615.28, 31,210.08 and 12,543.05

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Solution

The fourth proportional to 22,615.28, 31,210.08 and 12,543.05 is: 17,309.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.28 : 31,210.08 = 12,543.05 : x
  2. Step 2: Convert to fraction form
    22,615.28/31,210.08 = 12,543.05/x
  3. Step 3: Cross multiply
    22,615.28x = 31,210.08 × 12,543.05
  4. Step 4: Simplify right side
    22,615.28x = 391,469,437.89
  5. Step 5: Solve for x
    x = 391,469,437.89/22,615.28
  6. Step 6: Final answer
    x = 17,309.95

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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.