Home / 20,402.10-30,603.15-7,255.80

Finding the Fourth Proportional to 20,402.10, 30,603.15 and 7,255.80

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Solution

The fourth proportional to 20,402.10, 30,603.15 and 7,255.80 is: 10,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.10 : 30,603.15 = 7,255.80 : x
  2. Step 2: Convert to fraction form
    20,402.10/30,603.15 = 7,255.80/x
  3. Step 3: Cross multiply
    20,402.10x = 30,603.15 × 7,255.80
  4. Step 4: Simplify right side
    20,402.10x = 222,050,335.77
  5. Step 5: Solve for x
    x = 222,050,335.77/20,402.10
  6. Step 6: Final answer
    x = 10,883.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.