Home / 18,386.87-25,374.85-13,902.92

Finding the Fourth Proportional to 18,386.87, 25,374.85 and 13,902.92

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Solution

The fourth proportional to 18,386.87, 25,374.85 and 13,902.92 is: 19,186.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386.87 : 25,374.85 = 13,902.92 : x
  2. Step 2: Convert to fraction form
    18,386.87/25,374.85 = 13,902.92/x
  3. Step 3: Cross multiply
    18,386.87x = 25,374.85 × 13,902.92
  4. Step 4: Simplify right side
    18,386.87x = 352,784,509.56
  5. Step 5: Solve for x
    x = 352,784,509.56/18,386.87
  6. Step 6: Final answer
    x = 19,186.76

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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.