Home / 12,139.57-16,754.75-11,585.53

Finding the Fourth Proportional to 12,139.57, 16,754.75 and 11,585.53

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Solution

The fourth proportional to 12,139.57, 16,754.75 and 11,585.53 is: 15,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.57 : 16,754.75 = 11,585.53 : x
  2. Step 2: Convert to fraction form
    12,139.57/16,754.75 = 11,585.53/x
  3. Step 3: Cross multiply
    12,139.57x = 16,754.75 × 11,585.53
  4. Step 4: Simplify right side
    12,139.57x = 194,112,658.77
  5. Step 5: Solve for x
    x = 194,112,658.77/12,139.57
  6. Step 6: Final answer
    x = 15,990.08

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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.