Home / 18,665.28-25,756.92-10,281.78

Finding the Fourth Proportional to 18,665.28, 25,756.92 and 10,281.78

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Solution

The fourth proportional to 18,665.28, 25,756.92 and 10,281.78 is: 14,188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.28 : 25,756.92 = 10,281.78 : x
  2. Step 2: Convert to fraction form
    18,665.28/25,756.92 = 10,281.78/x
  3. Step 3: Cross multiply
    18,665.28x = 25,756.92 × 10,281.78
  4. Step 4: Simplify right side
    18,665.28x = 264,826,984.92
  5. Step 5: Solve for x
    x = 264,826,984.92/18,665.28
  6. Step 6: Final answer
    x = 14,188.21

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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.