Home / 22,203.18-30,633.12-15,830.78

Finding the Fourth Proportional to 22,203.18, 30,633.12 and 15,830.78

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Solution

The fourth proportional to 22,203.18, 30,633.12 and 15,830.78 is: 21,841.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,203.18 : 30,633.12 = 15,830.78 : x
  2. Step 2: Convert to fraction form
    22,203.18/30,633.12 = 15,830.78/x
  3. Step 3: Cross multiply
    22,203.18x = 30,633.12 × 15,830.78
  4. Step 4: Simplify right side
    22,203.18x = 484,946,030.27
  5. Step 5: Solve for x
    x = 484,946,030.27/22,203.18
  6. Step 6: Final answer
    x = 21,841.29

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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.