Home / 15,123.80-22,661.40-11,187.20

Finding the Fourth Proportional to 15,123.80, 22,661.40 and 11,187.20

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Solution

The fourth proportional to 15,123.80, 22,661.40 and 11,187.20 is: 16,762.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,123.80 : 22,661.40 = 11,187.20 : x
  2. Step 2: Convert to fraction form
    15,123.80/22,661.40 = 11,187.20/x
  3. Step 3: Cross multiply
    15,123.80x = 22,661.40 × 11,187.20
  4. Step 4: Simplify right side
    15,123.80x = 253,517,614.08
  5. Step 5: Solve for x
    x = 253,517,614.08/15,123.80
  6. Step 6: Final answer
    x = 16,762.83

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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.