Home / 18,155.16-25,057.62-15,165.72

Finding the Fourth Proportional to 18,155.16, 25,057.62 and 15,165.72

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Solution

The fourth proportional to 18,155.16, 25,057.62 and 15,165.72 is: 20,931.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.16 : 25,057.62 = 15,165.72 : x
  2. Step 2: Convert to fraction form
    18,155.16/25,057.62 = 15,165.72/x
  3. Step 3: Cross multiply
    18,155.16x = 25,057.62 × 15,165.72
  4. Step 4: Simplify right side
    18,155.16x = 380,016,848.79
  5. Step 5: Solve for x
    x = 380,016,848.79/18,155.16
  6. Step 6: Final answer
    x = 20,931.62

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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.