Home / 28,319.07-42,478.32-7,542.57

Finding the Fourth Proportional to 28,319.07, 42,478.32 and 7,542.57

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Solution

The fourth proportional to 28,319.07, 42,478.32 and 7,542.57 is: 11,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.07 : 42,478.32 = 7,542.57 : x
  2. Step 2: Convert to fraction form
    28,319.07/42,478.32 = 7,542.57/x
  3. Step 3: Cross multiply
    28,319.07x = 42,478.32 × 7,542.57
  4. Step 4: Simplify right side
    28,319.07x = 320,395,702.08
  5. Step 5: Solve for x
    x = 320,395,702.08/28,319.07
  6. Step 6: Final answer
    x = 11,313.78

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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.