Home / 18,760.65-28,130.58-7,675.12

Finding the Fourth Proportional to 18,760.65, 28,130.58 and 7,675.12

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Solution

The fourth proportional to 18,760.65, 28,130.58 and 7,675.12 is: 11,508.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.65 : 28,130.58 = 7,675.12 : x
  2. Step 2: Convert to fraction form
    18,760.65/28,130.58 = 7,675.12/x
  3. Step 3: Cross multiply
    18,760.65x = 28,130.58 × 7,675.12
  4. Step 4: Simplify right side
    18,760.65x = 215,905,577.17
  5. Step 5: Solve for x
    x = 215,905,577.17/18,760.65
  6. Step 6: Final answer
    x = 11,508.43

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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.