Home / 28,247.20-38,981.20-15,671.96

Finding the Fourth Proportional to 28,247.20, 38,981.20 and 15,671.96

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Solution

The fourth proportional to 28,247.20, 38,981.20 and 15,671.96 is: 21,627.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.20 : 38,981.20 = 15,671.96 : x
  2. Step 2: Convert to fraction form
    28,247.20/38,981.20 = 15,671.96/x
  3. Step 3: Cross multiply
    28,247.20x = 38,981.20 × 15,671.96
  4. Step 4: Simplify right side
    28,247.20x = 610,911,807.15
  5. Step 5: Solve for x
    x = 610,911,807.15/28,247.20
  6. Step 6: Final answer
    x = 21,627.34

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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.