Home / 12,901.12-19,349.76-4,135.20

Finding the Fourth Proportional to 12,901.12, 19,349.76 and 4,135.20

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Solution

The fourth proportional to 12,901.12, 19,349.76 and 4,135.20 is: 6,202.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.12 : 19,349.76 = 4,135.20 : x
  2. Step 2: Convert to fraction form
    12,901.12/19,349.76 = 4,135.20/x
  3. Step 3: Cross multiply
    12,901.12x = 19,349.76 × 4,135.20
  4. Step 4: Simplify right side
    12,901.12x = 80,015,127.55
  5. Step 5: Solve for x
    x = 80,015,127.55/12,901.12
  6. Step 6: Final answer
    x = 6,202.18

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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.