Home / 18,378.74-25,367.18-10,425.62

Finding the Fourth Proportional to 18,378.74, 25,367.18 and 10,425.62

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Solution

The fourth proportional to 18,378.74, 25,367.18 and 10,425.62 is: 14,389.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.74 : 25,367.18 = 10,425.62 : x
  2. Step 2: Convert to fraction form
    18,378.74/25,367.18 = 10,425.62/x
  3. Step 3: Cross multiply
    18,378.74x = 25,367.18 × 10,425.62
  4. Step 4: Simplify right side
    18,378.74x = 264,468,579.15
  5. Step 5: Solve for x
    x = 264,468,579.15/18,378.74
  6. Step 6: Final answer
    x = 14,389.92

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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.