Home / 11,141.87-15,378.05-6,425.51

Finding the Fourth Proportional to 11,141.87, 15,378.05 and 6,425.51

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Solution

The fourth proportional to 11,141.87, 15,378.05 and 6,425.51 is: 8,868.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,141.87 : 15,378.05 = 6,425.51 : x
  2. Step 2: Convert to fraction form
    11,141.87/15,378.05 = 6,425.51/x
  3. Step 3: Cross multiply
    11,141.87x = 15,378.05 × 6,425.51
  4. Step 4: Simplify right side
    11,141.87x = 98,811,753.23
  5. Step 5: Solve for x
    x = 98,811,753.23/11,141.87
  6. Step 6: Final answer
    x = 8,868.51

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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.