Home / 28,230.32-38,960.68-15,657.44

Finding the Fourth Proportional to 28,230.32, 38,960.68 and 15,657.44

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Solution

The fourth proportional to 28,230.32, 38,960.68 and 15,657.44 is: 21,608.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230.32 : 38,960.68 = 15,657.44 : x
  2. Step 2: Convert to fraction form
    28,230.32/38,960.68 = 15,657.44/x
  3. Step 3: Cross multiply
    28,230.32x = 38,960.68 × 15,657.44
  4. Step 4: Simplify right side
    28,230.32x = 610,024,509.46
  5. Step 5: Solve for x
    x = 610,024,509.46/28,230.32
  6. Step 6: Final answer
    x = 21,608.84

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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.