Home / 22,280.81-30,726.95-15,121.11

Finding the Fourth Proportional to 22,280.81, 30,726.95 and 15,121.11

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Solution

The fourth proportional to 22,280.81, 30,726.95 and 15,121.11 is: 20,853.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.81 : 30,726.95 = 15,121.11 : x
  2. Step 2: Convert to fraction form
    22,280.81/30,726.95 = 15,121.11/x
  3. Step 3: Cross multiply
    22,280.81x = 30,726.95 × 15,121.11
  4. Step 4: Simplify right side
    22,280.81x = 464,625,590.91
  5. Step 5: Solve for x
    x = 464,625,590.91/22,280.81
  6. Step 6: Final answer
    x = 20,853.17

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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.