Home / 12,387.17-18,586.02-8,228.63

Finding the Fourth Proportional to 12,387.17, 18,586.02 and 8,228.63

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Solution

The fourth proportional to 12,387.17, 18,586.02 and 8,228.63 is: 12,346.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.17 : 18,586.02 = 8,228.63 : x
  2. Step 2: Convert to fraction form
    12,387.17/18,586.02 = 8,228.63/x
  3. Step 3: Cross multiply
    12,387.17x = 18,586.02 × 8,228.63
  4. Step 4: Simplify right side
    12,387.17x = 152,937,481.75
  5. Step 5: Solve for x
    x = 152,937,481.75/12,387.17
  6. Step 6: Final answer
    x = 12,346.44

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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.