Home / 12,431.73-17,154.95-7,124.61

Finding the Fourth Proportional to 12,431.73, 17,154.95 and 7,124.61

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Solution

The fourth proportional to 12,431.73, 17,154.95 and 7,124.61 is: 9,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.73 : 17,154.95 = 7,124.61 : x
  2. Step 2: Convert to fraction form
    12,431.73/17,154.95 = 7,124.61/x
  3. Step 3: Cross multiply
    12,431.73x = 17,154.95 × 7,124.61
  4. Step 4: Simplify right side
    12,431.73x = 122,222,328.32
  5. Step 5: Solve for x
    x = 122,222,328.32/12,431.73
  6. Step 6: Final answer
    x = 9,831.48

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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.