Home / 20,559.05-28,371.53-11,127.61

Finding the Fourth Proportional to 20,559.05, 28,371.53 and 11,127.61

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Solution

The fourth proportional to 20,559.05, 28,371.53 and 11,127.61 is: 15,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.05 : 28,371.53 = 11,127.61 : x
  2. Step 2: Convert to fraction form
    20,559.05/28,371.53 = 11,127.61/x
  3. Step 3: Cross multiply
    20,559.05x = 28,371.53 × 11,127.61
  4. Step 4: Simplify right side
    20,559.05x = 315,707,384.23
  5. Step 5: Solve for x
    x = 315,707,384.23/20,559.05
  6. Step 6: Final answer
    x = 15,356.13

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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.