Home / 18,811.20-25,959.45-10,427.70

Finding the Fourth Proportional to 18,811.20, 25,959.45 and 10,427.70

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Solution

The fourth proportional to 18,811.20, 25,959.45 and 10,427.70 is: 14,390.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.20 : 25,959.45 = 10,427.70 : x
  2. Step 2: Convert to fraction form
    18,811.20/25,959.45 = 10,427.70/x
  3. Step 3: Cross multiply
    18,811.20x = 25,959.45 × 10,427.70
  4. Step 4: Simplify right side
    18,811.20x = 270,697,356.77
  5. Step 5: Solve for x
    x = 270,697,356.77/18,811.20
  6. Step 6: Final answer
    x = 14,390.22

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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.