Home / 18,278.46-25,221.78-10,319.40

Finding the Fourth Proportional to 18,278.46, 25,221.78 and 10,319.40

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Solution

The fourth proportional to 18,278.46, 25,221.78 and 10,319.40 is: 14,239.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.46 : 25,221.78 = 10,319.40 : x
  2. Step 2: Convert to fraction form
    18,278.46/25,221.78 = 10,319.40/x
  3. Step 3: Cross multiply
    18,278.46x = 25,221.78 × 10,319.40
  4. Step 4: Simplify right side
    18,278.46x = 260,273,636.53
  5. Step 5: Solve for x
    x = 260,273,636.53/18,278.46
  6. Step 6: Final answer
    x = 14,239.36

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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.