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Finding the Fourth Proportional to 19,959.10, 29,922.40 and 7,472.12

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Solution

The fourth proportional to 19,959.10, 29,922.40 and 7,472.12 is: 11,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.10 : 29,922.40 = 7,472.12 : x
  2. Step 2: Convert to fraction form
    19,959.10/29,922.40 = 7,472.12/x
  3. Step 3: Cross multiply
    19,959.10x = 29,922.40 × 7,472.12
  4. Step 4: Simplify right side
    19,959.10x = 223,583,763.49
  5. Step 5: Solve for x
    x = 223,583,763.49/19,959.10
  6. Step 6: Final answer
    x = 11,202.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.