Home / 20,470.47-28,247.72-11,516.24

Finding the Fourth Proportional to 20,470.47, 28,247.72 and 11,516.24

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Solution

The fourth proportional to 20,470.47, 28,247.72 and 11,516.24 is: 15,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.47 : 28,247.72 = 11,516.24 : x
  2. Step 2: Convert to fraction form
    20,470.47/28,247.72 = 11,516.24/x
  3. Step 3: Cross multiply
    20,470.47x = 28,247.72 × 11,516.24
  4. Step 4: Simplify right side
    20,470.47x = 325,307,465.39
  5. Step 5: Solve for x
    x = 325,307,465.39/20,470.47
  6. Step 6: Final answer
    x = 15,891.55

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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.