Home / 28,247.72-38,982.22-15,500.10

Finding the Fourth Proportional to 28,247.72, 38,982.22 and 15,500.10

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Solution

The fourth proportional to 28,247.72, 38,982.22 and 15,500.10 is: 21,390.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.72 : 38,982.22 = 15,500.10 : x
  2. Step 2: Convert to fraction form
    28,247.72/38,982.22 = 15,500.10/x
  3. Step 3: Cross multiply
    28,247.72x = 38,982.22 × 15,500.10
  4. Step 4: Simplify right side
    28,247.72x = 604,228,308.22
  5. Step 5: Solve for x
    x = 604,228,308.22/28,247.72
  6. Step 6: Final answer
    x = 21,390.34

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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.