Home / 28,223.28-38,947.20-15,648.96

Finding the Fourth Proportional to 28,223.28, 38,947.20 and 15,648.96

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Solution

The fourth proportional to 28,223.28, 38,947.20 and 15,648.96 is: 21,595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.28 : 38,947.20 = 15,648.96 : x
  2. Step 2: Convert to fraction form
    28,223.28/38,947.20 = 15,648.96/x
  3. Step 3: Cross multiply
    28,223.28x = 38,947.20 × 15,648.96
  4. Step 4: Simplify right side
    28,223.28x = 609,483,174.91
  5. Step 5: Solve for x
    x = 609,483,174.91/28,223.28
  6. Step 6: Final answer
    x = 21,595.05

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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.