Home / 12,789.46-17,649.35-7,124.14

Finding the Fourth Proportional to 12,789.46, 17,649.35 and 7,124.14

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Solution

The fourth proportional to 12,789.46, 17,649.35 and 7,124.14 is: 9,831.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.46 : 17,649.35 = 7,124.14 : x
  2. Step 2: Convert to fraction form
    12,789.46/17,649.35 = 7,124.14/x
  3. Step 3: Cross multiply
    12,789.46x = 17,649.35 × 7,124.14
  4. Step 4: Simplify right side
    12,789.46x = 125,736,453.47
  5. Step 5: Solve for x
    x = 125,736,453.47/12,789.46
  6. Step 6: Final answer
    x = 9,831.26

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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.