Home / 22,721.93-31,382.51-15,155.11

Finding the Fourth Proportional to 22,721.93, 31,382.51 and 15,155.11

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Solution

The fourth proportional to 22,721.93, 31,382.51 and 15,155.11 is: 20,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.93 : 31,382.51 = 15,155.11 : x
  2. Step 2: Convert to fraction form
    22,721.93/31,382.51 = 15,155.11/x
  3. Step 3: Cross multiply
    22,721.93x = 31,382.51 × 15,155.11
  4. Step 4: Simplify right side
    22,721.93x = 475,605,391.13
  5. Step 5: Solve for x
    x = 475,605,391.13/22,721.93
  6. Step 6: Final answer
    x = 20,931.56

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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.