Home / 28,512.74-39,346.34-15,591.77

Finding the Fourth Proportional to 28,512.74, 39,346.34 and 15,591.77

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Solution

The fourth proportional to 28,512.74, 39,346.34 and 15,591.77 is: 21,515.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.74 : 39,346.34 = 15,591.77 : x
  2. Step 2: Convert to fraction form
    28,512.74/39,346.34 = 15,591.77/x
  3. Step 3: Cross multiply
    28,512.74x = 39,346.34 × 15,591.77
  4. Step 4: Simplify right side
    28,512.74x = 613,479,005.66
  5. Step 5: Solve for x
    x = 613,479,005.66/28,512.74
  6. Step 6: Final answer
    x = 21,515.96

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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.