Home / 18,455.45-25,470.11-15,088.88

Finding the Fourth Proportional to 18,455.45, 25,470.11 and 15,088.88

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Solution

The fourth proportional to 18,455.45, 25,470.11 and 15,088.88 is: 20,823.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.45 : 25,470.11 = 15,088.88 : x
  2. Step 2: Convert to fraction form
    18,455.45/25,470.11 = 15,088.88/x
  3. Step 3: Cross multiply
    18,455.45x = 25,470.11 × 15,088.88
  4. Step 4: Simplify right side
    18,455.45x = 384,315,534.77
  5. Step 5: Solve for x
    x = 384,315,534.77/18,455.45
  6. Step 6: Final answer
    x = 20,823.96

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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.