Home / 12,339.17-18,489.38-8,392.31

Finding the Fourth Proportional to 12,339.17, 18,489.38 and 8,392.31

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Solution

The fourth proportional to 12,339.17, 18,489.38 and 8,392.31 is: 12,575.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.17 : 18,489.38 = 8,392.31 : x
  2. Step 2: Convert to fraction form
    12,339.17/18,489.38 = 8,392.31/x
  3. Step 3: Cross multiply
    12,339.17x = 18,489.38 × 8,392.31
  4. Step 4: Simplify right side
    12,339.17x = 155,168,474.26
  5. Step 5: Solve for x
    x = 155,168,474.26/12,339.17
  6. Step 6: Final answer
    x = 12,575.28

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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.