Home / 28,305.09-39,059.96-15,730.65

Finding the Fourth Proportional to 28,305.09, 39,059.96 and 15,730.65

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Solution

The fourth proportional to 28,305.09, 39,059.96 and 15,730.65 is: 21,707.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.09 : 39,059.96 = 15,730.65 : x
  2. Step 2: Convert to fraction form
    28,305.09/39,059.96 = 15,730.65/x
  3. Step 3: Cross multiply
    28,305.09x = 39,059.96 × 15,730.65
  4. Step 4: Simplify right side
    28,305.09x = 614,438,481.12
  5. Step 5: Solve for x
    x = 614,438,481.12/28,305.09
  6. Step 6: Final answer
    x = 21,707.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.