Home / 18,155.98-25,065.35-13,898.89

Finding the Fourth Proportional to 18,155.98, 25,065.35 and 13,898.89

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Solution

The fourth proportional to 18,155.98, 25,065.35 and 13,898.89 is: 19,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.98 : 25,065.35 = 13,898.89 : x
  2. Step 2: Convert to fraction form
    18,155.98/25,065.35 = 13,898.89/x
  3. Step 3: Cross multiply
    18,155.98x = 25,065.35 × 13,898.89
  4. Step 4: Simplify right side
    18,155.98x = 348,380,542.46
  5. Step 5: Solve for x
    x = 348,380,542.46/18,155.98
  6. Step 6: Final answer
    x = 19,188.20

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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.