Home / 12,143.52-18,202.32-8,670.24

Finding the Fourth Proportional to 12,143.52, 18,202.32 and 8,670.24

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Solution

The fourth proportional to 12,143.52, 18,202.32 and 8,670.24 is: 12,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.52 : 18,202.32 = 8,670.24 : x
  2. Step 2: Convert to fraction form
    12,143.52/18,202.32 = 8,670.24/x
  3. Step 3: Cross multiply
    12,143.52x = 18,202.32 × 8,670.24
  4. Step 4: Simplify right side
    12,143.52x = 157,818,482.96
  5. Step 5: Solve for x
    x = 157,818,482.96/12,143.52
  6. Step 6: Final answer
    x = 12,996.11

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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.