Home / 28,118.64-38,803.20-15,543.12

Finding the Fourth Proportional to 28,118.64, 38,803.20 and 15,543.12

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Solution

The fourth proportional to 28,118.64, 38,803.20 and 15,543.12 is: 21,449.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.64 : 38,803.20 = 15,543.12 : x
  2. Step 2: Convert to fraction form
    28,118.64/38,803.20 = 15,543.12/x
  3. Step 3: Cross multiply
    28,118.64x = 38,803.20 × 15,543.12
  4. Step 4: Simplify right side
    28,118.64x = 603,122,793.98
  5. Step 5: Solve for x
    x = 603,122,793.98/28,118.64
  6. Step 6: Final answer
    x = 21,449.22

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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.