Home / 15,655.97-21,604.56-9,371.81

Finding the Fourth Proportional to 15,655.97, 21,604.56 and 9,371.81

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Solution

The fourth proportional to 15,655.97, 21,604.56 and 9,371.81 is: 12,932.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.97 : 21,604.56 = 9,371.81 : x
  2. Step 2: Convert to fraction form
    15,655.97/21,604.56 = 9,371.81/x
  3. Step 3: Cross multiply
    15,655.97x = 21,604.56 × 9,371.81
  4. Step 4: Simplify right side
    15,655.97x = 202,473,831.45
  5. Step 5: Solve for x
    x = 202,473,831.45/15,655.97
  6. Step 6: Final answer
    x = 12,932.69

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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.