Home / 12,904.11-17,807.45-7,238.87

Finding the Fourth Proportional to 12,904.11, 17,807.45 and 7,238.87

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Solution

The fourth proportional to 12,904.11, 17,807.45 and 7,238.87 is: 9,989.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.11 : 17,807.45 = 7,238.87 : x
  2. Step 2: Convert to fraction form
    12,904.11/17,807.45 = 7,238.87/x
  3. Step 3: Cross multiply
    12,904.11x = 17,807.45 × 7,238.87
  4. Step 4: Simplify right side
    12,904.11x = 128,905,757.13
  5. Step 5: Solve for x
    x = 128,905,757.13/12,904.11
  6. Step 6: Final answer
    x = 9,989.51

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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.