Home / 19,631.80-29,469.30-10,862.20

Finding the Fourth Proportional to 19,631.80, 29,469.30 and 10,862.20

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Solution

The fourth proportional to 19,631.80, 29,469.30 and 10,862.20 is: 16,305.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,631.80 : 29,469.30 = 10,862.20 : x
  2. Step 2: Convert to fraction form
    19,631.80/29,469.30 = 10,862.20/x
  3. Step 3: Cross multiply
    19,631.80x = 29,469.30 × 10,862.20
  4. Step 4: Simplify right side
    19,631.80x = 320,101,430.46
  5. Step 5: Solve for x
    x = 320,101,430.46/19,631.80
  6. Step 6: Final answer
    x = 16,305.25

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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.