Home / 20,516.77-28,314.69-11,565.11

Finding the Fourth Proportional to 20,516.77, 28,314.69 and 11,565.11

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Solution

The fourth proportional to 20,516.77, 28,314.69 and 11,565.11 is: 15,960.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.77 : 28,314.69 = 11,565.11 : x
  2. Step 2: Convert to fraction form
    20,516.77/28,314.69 = 11,565.11/x
  3. Step 3: Cross multiply
    20,516.77x = 28,314.69 × 11,565.11
  4. Step 4: Simplify right side
    20,516.77x = 327,462,504.47
  5. Step 5: Solve for x
    x = 327,462,504.47/20,516.77
  6. Step 6: Final answer
    x = 15,960.72

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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.