Home / 20,740.42-28,645.82-15,100.53

Finding the Fourth Proportional to 20,740.42, 28,645.82 and 15,100.53

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Solution

The fourth proportional to 20,740.42, 28,645.82 and 15,100.53 is: 20,856.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.42 : 28,645.82 = 15,100.53 : x
  2. Step 2: Convert to fraction form
    20,740.42/28,645.82 = 15,100.53/x
  3. Step 3: Cross multiply
    20,740.42x = 28,645.82 × 15,100.53
  4. Step 4: Simplify right side
    20,740.42x = 432,567,064.28
  5. Step 5: Solve for x
    x = 432,567,064.28/20,740.42
  6. Step 6: Final answer
    x = 20,856.23

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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.