Home / 13,712.91-18,923.86-7,425.28

Finding the Fourth Proportional to 13,712.91, 18,923.86 and 7,425.28

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Solution

The fourth proportional to 13,712.91, 18,923.86 and 7,425.28 is: 10,246.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.91 : 18,923.86 = 7,425.28 : x
  2. Step 2: Convert to fraction form
    13,712.91/18,923.86 = 7,425.28/x
  3. Step 3: Cross multiply
    13,712.91x = 18,923.86 × 7,425.28
  4. Step 4: Simplify right side
    13,712.91x = 140,514,959.18
  5. Step 5: Solve for x
    x = 140,514,959.18/13,712.91
  6. Step 6: Final answer
    x = 10,246.91

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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.