Home / 11,857.20-16,366.19-7,378.28

Finding the Fourth Proportional to 11,857.20, 16,366.19 and 7,378.28

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Solution

The fourth proportional to 11,857.20, 16,366.19 and 7,378.28 is: 10,184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,857.20 : 16,366.19 = 7,378.28 : x
  2. Step 2: Convert to fraction form
    11,857.20/16,366.19 = 7,378.28/x
  3. Step 3: Cross multiply
    11,857.20x = 16,366.19 × 7,378.28
  4. Step 4: Simplify right side
    11,857.20x = 120,754,332.35
  5. Step 5: Solve for x
    x = 120,754,332.35/11,857.20
  6. Step 6: Final answer
    x = 10,184.05

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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.