Home / 22,721.14-31,355.40-13,295.17

Finding the Fourth Proportional to 22,721.14, 31,355.40 and 13,295.17

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Solution

The fourth proportional to 22,721.14, 31,355.40 and 13,295.17 is: 18,347.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.14 : 31,355.40 = 13,295.17 : x
  2. Step 2: Convert to fraction form
    22,721.14/31,355.40 = 13,295.17/x
  3. Step 3: Cross multiply
    22,721.14x = 31,355.40 × 13,295.17
  4. Step 4: Simplify right side
    22,721.14x = 416,875,373.42
  5. Step 5: Solve for x
    x = 416,875,373.42/22,721.14
  6. Step 6: Final answer
    x = 18,347.47

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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.