Home / 28,102.32-38,781.93-15,356.04

Finding the Fourth Proportional to 28,102.32, 38,781.93 and 15,356.04

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Solution

The fourth proportional to 28,102.32, 38,781.93 and 15,356.04 is: 21,191.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.32 : 38,781.93 = 15,356.04 : x
  2. Step 2: Convert to fraction form
    28,102.32/38,781.93 = 15,356.04/x
  3. Step 3: Cross multiply
    28,102.32x = 38,781.93 × 15,356.04
  4. Step 4: Simplify right side
    28,102.32x = 595,536,868.36
  5. Step 5: Solve for x
    x = 595,536,868.36/28,102.32
  6. Step 6: Final answer
    x = 21,191.73

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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.