Home / 18,363.42-25,340.55-10,405.74

Finding the Fourth Proportional to 18,363.42, 25,340.55 and 10,405.74

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Solution

The fourth proportional to 18,363.42, 25,340.55 and 10,405.74 is: 14,359.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.42 : 25,340.55 = 10,405.74 : x
  2. Step 2: Convert to fraction form
    18,363.42/25,340.55 = 10,405.74/x
  3. Step 3: Cross multiply
    18,363.42x = 25,340.55 × 10,405.74
  4. Step 4: Simplify right side
    18,363.42x = 263,687,174.76
  5. Step 5: Solve for x
    x = 263,687,174.76/18,363.42
  6. Step 6: Final answer
    x = 14,359.37

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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.