Home / 18,356.38-25,342.56-13,315.76

Finding the Fourth Proportional to 18,356.38, 25,342.56 and 13,315.76

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Solution

The fourth proportional to 18,356.38, 25,342.56 and 13,315.76 is: 18,383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.38 : 25,342.56 = 13,315.76 : x
  2. Step 2: Convert to fraction form
    18,356.38/25,342.56 = 13,315.76/x
  3. Step 3: Cross multiply
    18,356.38x = 25,342.56 × 13,315.76
  4. Step 4: Simplify right side
    18,356.38x = 337,455,446.75
  5. Step 5: Solve for x
    x = 337,455,446.75/18,356.38
  6. Step 6: Final answer
    x = 18,383.55

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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.