Home / 22,217.40-30,607.20-15,490.80

Finding the Fourth Proportional to 22,217.40, 30,607.20 and 15,490.80

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Solution

The fourth proportional to 22,217.40, 30,607.20 and 15,490.80 is: 21,340.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,217.40 : 30,607.20 = 15,490.80 : x
  2. Step 2: Convert to fraction form
    22,217.40/30,607.20 = 15,490.80/x
  3. Step 3: Cross multiply
    22,217.40x = 30,607.20 × 15,490.80
  4. Step 4: Simplify right side
    22,217.40x = 474,130,013.76
  5. Step 5: Solve for x
    x = 474,130,013.76/22,217.40
  6. Step 6: Final answer
    x = 21,340.48

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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.