Home / 15,122.03-20,868.38-8,407.45

Finding the Fourth Proportional to 15,122.03, 20,868.38 and 8,407.45

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Solution

The fourth proportional to 15,122.03, 20,868.38 and 8,407.45 is: 11,602.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.03 : 20,868.38 = 8,407.45 : x
  2. Step 2: Convert to fraction form
    15,122.03/20,868.38 = 8,407.45/x
  3. Step 3: Cross multiply
    15,122.03x = 20,868.38 × 8,407.45
  4. Step 4: Simplify right side
    15,122.03x = 175,449,778.11
  5. Step 5: Solve for x
    x = 175,449,778.11/15,122.03
  6. Step 6: Final answer
    x = 11,602.26

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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.