Home / 12,175.80-18,279.90-9,713.40

Finding the Fourth Proportional to 12,175.80, 18,279.90 and 9,713.40

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Solution

The fourth proportional to 12,175.80, 18,279.90 and 9,713.40 is: 14,583.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,175.80 : 18,279.90 = 9,713.40 : x
  2. Step 2: Convert to fraction form
    12,175.80/18,279.90 = 9,713.40/x
  3. Step 3: Cross multiply
    12,175.80x = 18,279.90 × 9,713.40
  4. Step 4: Simplify right side
    12,175.80x = 177,559,980.66
  5. Step 5: Solve for x
    x = 177,559,980.66/12,175.80
  6. Step 6: Final answer
    x = 14,583.02

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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.