Home / 18,347.90-25,318.11-10,390.70

Finding the Fourth Proportional to 18,347.90, 25,318.11 and 10,390.70

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Solution

The fourth proportional to 18,347.90, 25,318.11 and 10,390.70 is: 14,338.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.90 : 25,318.11 = 10,390.70 : x
  2. Step 2: Convert to fraction form
    18,347.90/25,318.11 = 10,390.70/x
  3. Step 3: Cross multiply
    18,347.90x = 25,318.11 × 10,390.70
  4. Step 4: Simplify right side
    18,347.90x = 263,072,885.58
  5. Step 5: Solve for x
    x = 263,072,885.58/18,347.90
  6. Step 6: Final answer
    x = 14,338.04

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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.