Home / 18,713.12-28,045.32-7,606.72

Finding the Fourth Proportional to 18,713.12, 28,045.32 and 7,606.72

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Solution

The fourth proportional to 18,713.12, 28,045.32 and 7,606.72 is: 11,400.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.12 : 28,045.32 = 7,606.72 : x
  2. Step 2: Convert to fraction form
    18,713.12/28,045.32 = 7,606.72/x
  3. Step 3: Cross multiply
    18,713.12x = 28,045.32 × 7,606.72
  4. Step 4: Simplify right side
    18,713.12x = 213,332,896.55
  5. Step 5: Solve for x
    x = 213,332,896.55/18,713.12
  6. Step 6: Final answer
    x = 11,400.18

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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.