Home / 22,281.13-30,751.60-12,721.41

Finding the Fourth Proportional to 22,281.13, 30,751.60 and 12,721.41

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Solution

The fourth proportional to 22,281.13, 30,751.60 and 12,721.41 is: 17,557.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,281.13 : 30,751.60 = 12,721.41 : x
  2. Step 2: Convert to fraction form
    22,281.13/30,751.60 = 12,721.41/x
  3. Step 3: Cross multiply
    22,281.13x = 30,751.60 × 12,721.41
  4. Step 4: Simplify right side
    22,281.13x = 391,203,711.76
  5. Step 5: Solve for x
    x = 391,203,711.76/22,281.13
  6. Step 6: Final answer
    x = 17,557.62

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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.