Home / 28,339.38-39,108.38-15,764.13

Finding the Fourth Proportional to 28,339.38, 39,108.38 and 15,764.13

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Solution

The fourth proportional to 28,339.38, 39,108.38 and 15,764.13 is: 21,754.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.38 : 39,108.38 = 15,764.13 : x
  2. Step 2: Convert to fraction form
    28,339.38/39,108.38 = 15,764.13/x
  3. Step 3: Cross multiply
    28,339.38x = 39,108.38 × 15,764.13
  4. Step 4: Simplify right side
    28,339.38x = 616,509,507.59
  5. Step 5: Solve for x
    x = 616,509,507.59/28,339.38
  6. Step 6: Final answer
    x = 21,754.52

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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.