Home / 28,221.20-38,947.56-15,650

Finding the Fourth Proportional to 28,221.20, 38,947.56 and 15,650

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Solution

The fourth proportional to 28,221.20, 38,947.56 and 15,650 is: 21,598.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.20 : 38,947.56 = 15,650 : x
  2. Step 2: Convert to fraction form
    28,221.20/38,947.56 = 15,650/x
  3. Step 3: Cross multiply
    28,221.20x = 38,947.56 × 15,650
  4. Step 4: Simplify right side
    28,221.20x = 609,529,314
  5. Step 5: Solve for x
    x = 609,529,314/28,221.20
  6. Step 6: Final answer
    x = 21,598.28

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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.