Home / 18,770.40-28,159.74-7,083.72

Finding the Fourth Proportional to 18,770.40, 28,159.74 and 7,083.72

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Solution

The fourth proportional to 18,770.40, 28,159.74 and 7,083.72 is: 10,627.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.40 : 28,159.74 = 7,083.72 : x
  2. Step 2: Convert to fraction form
    18,770.40/28,159.74 = 7,083.72/x
  3. Step 3: Cross multiply
    18,770.40x = 28,159.74 × 7,083.72
  4. Step 4: Simplify right side
    18,770.40x = 199,475,713.43
  5. Step 5: Solve for x
    x = 199,475,713.43/18,770.40
  6. Step 6: Final answer
    x = 10,627.14

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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.