Home / 12,753.12-19,101.40-7,807.92

Finding the Fourth Proportional to 12,753.12, 19,101.40 and 7,807.92

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Solution

The fourth proportional to 12,753.12, 19,101.40 and 7,807.92 is: 11,694.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,753.12 : 19,101.40 = 7,807.92 : x
  2. Step 2: Convert to fraction form
    12,753.12/19,101.40 = 7,807.92/x
  3. Step 3: Cross multiply
    12,753.12x = 19,101.40 × 7,807.92
  4. Step 4: Simplify right side
    12,753.12x = 149,142,203.09
  5. Step 5: Solve for x
    x = 149,142,203.09/12,753.12
  6. Step 6: Final answer
    x = 11,694.57

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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.