Home / 15,157.72-22,688.10-8,120.20

Finding the Fourth Proportional to 15,157.72, 22,688.10 and 8,120.20

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Solution

The fourth proportional to 15,157.72, 22,688.10 and 8,120.20 is: 12,154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,157.72 : 22,688.10 = 8,120.20 : x
  2. Step 2: Convert to fraction form
    15,157.72/22,688.10 = 8,120.20/x
  3. Step 3: Cross multiply
    15,157.72x = 22,688.10 × 8,120.20
  4. Step 4: Simplify right side
    15,157.72x = 184,231,909.62
  5. Step 5: Solve for x
    x = 184,231,909.62/15,157.72
  6. Step 6: Final answer
    x = 12,154.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.