Home / 12,387.39-18,554.82-9,742.35

Finding the Fourth Proportional to 12,387.39, 18,554.82 and 9,742.35

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Solution

The fourth proportional to 12,387.39, 18,554.82 and 9,742.35 is: 14,592.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.39 : 18,554.82 = 9,742.35 : x
  2. Step 2: Convert to fraction form
    12,387.39/18,554.82 = 9,742.35/x
  3. Step 3: Cross multiply
    12,387.39x = 18,554.82 × 9,742.35
  4. Step 4: Simplify right side
    12,387.39x = 180,767,550.63
  5. Step 5: Solve for x
    x = 180,767,550.63/12,387.39
  6. Step 6: Final answer
    x = 14,592.87

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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.