Home / 18,225.20-25,165.68-11,521.64

Finding the Fourth Proportional to 18,225.20, 25,165.68 and 11,521.64

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Solution

The fourth proportional to 18,225.20, 25,165.68 and 11,521.64 is: 15,909.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,225.20 : 25,165.68 = 11,521.64 : x
  2. Step 2: Convert to fraction form
    18,225.20/25,165.68 = 11,521.64/x
  3. Step 3: Cross multiply
    18,225.20x = 25,165.68 × 11,521.64
  4. Step 4: Simplify right side
    18,225.20x = 289,949,905.32
  5. Step 5: Solve for x
    x = 289,949,905.32/18,225.20
  6. Step 6: Final answer
    x = 15,909.29

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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.