Home / 13,902.32-20,841.12-5,135.18

Finding the Fourth Proportional to 13,902.32, 20,841.12 and 5,135.18

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Solution

The fourth proportional to 13,902.32, 20,841.12 and 5,135.18 is: 7,698.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.32 : 20,841.12 = 5,135.18 : x
  2. Step 2: Convert to fraction form
    13,902.32/20,841.12 = 5,135.18/x
  3. Step 3: Cross multiply
    13,902.32x = 20,841.12 × 5,135.18
  4. Step 4: Simplify right side
    13,902.32x = 107,022,798.40
  5. Step 5: Solve for x
    x = 107,022,798.40/13,902.32
  6. Step 6: Final answer
    x = 7,698.20

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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.