Home / 28,108.30-38,763.08-18,039.90

Finding the Fourth Proportional to 28,108.30, 38,763.08 and 18,039.90

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Solution

The fourth proportional to 28,108.30, 38,763.08 and 18,039.90 is: 24,878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.30 : 38,763.08 = 18,039.90 : x
  2. Step 2: Convert to fraction form
    28,108.30/38,763.08 = 18,039.90/x
  3. Step 3: Cross multiply
    28,108.30x = 38,763.08 × 18,039.90
  4. Step 4: Simplify right side
    28,108.30x = 699,282,086.89
  5. Step 5: Solve for x
    x = 699,282,086.89/28,108.30
  6. Step 6: Final answer
    x = 24,878.14

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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.