Home / 28,319.38-39,081.72-15,573.08

Finding the Fourth Proportional to 28,319.38, 39,081.72 and 15,573.08

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Solution

The fourth proportional to 28,319.38, 39,081.72 and 15,573.08 is: 21,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.38 : 39,081.72 = 15,573.08 : x
  2. Step 2: Convert to fraction form
    28,319.38/39,081.72 = 15,573.08/x
  3. Step 3: Cross multiply
    28,319.38x = 39,081.72 × 15,573.08
  4. Step 4: Simplify right side
    28,319.38x = 608,622,908.20
  5. Step 5: Solve for x
    x = 608,622,908.20/28,319.38
  6. Step 6: Final answer
    x = 21,491.39

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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.