Home / 28,680-43,004.16-19,319.52

Finding the Fourth Proportional to 28,680, 43,004.16 and 19,319.52

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Solution

The fourth proportional to 28,680, 43,004.16 and 19,319.52 is: 28,968.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680 : 43,004.16 = 19,319.52 : x
  2. Step 2: Convert to fraction form
    28,680/43,004.16 = 19,319.52/x
  3. Step 3: Cross multiply
    28,680x = 43,004.16 × 19,319.52
  4. Step 4: Simplify right side
    28,680x = 830,819,729.20
  5. Step 5: Solve for x
    x = 830,819,729.20/28,680
  6. Step 6: Final answer
    x = 28,968.61

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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.