Home / 28,102.23-42,174.14-13,311.18

Finding the Fourth Proportional to 28,102.23, 42,174.14 and 13,311.18

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Solution

The fourth proportional to 28,102.23, 42,174.14 and 13,311.18 is: 19,976.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.23 : 42,174.14 = 13,311.18 : x
  2. Step 2: Convert to fraction form
    28,102.23/42,174.14 = 13,311.18/x
  3. Step 3: Cross multiply
    28,102.23x = 42,174.14 × 13,311.18
  4. Step 4: Simplify right side
    28,102.23x = 561,387,502.33
  5. Step 5: Solve for x
    x = 561,387,502.33/28,102.23
  6. Step 6: Final answer
    x = 19,976.62

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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.