Home / 28,220.66-38,944.56-15,645.41

Finding the Fourth Proportional to 28,220.66, 38,944.56 and 15,645.41

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Solution

The fourth proportional to 28,220.66, 38,944.56 and 15,645.41 is: 21,590.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.66 : 38,944.56 = 15,645.41 : x
  2. Step 2: Convert to fraction form
    28,220.66/38,944.56 = 15,645.41/x
  3. Step 3: Cross multiply
    28,220.66x = 38,944.56 × 15,645.41
  4. Step 4: Simplify right side
    28,220.66x = 609,303,608.47
  5. Step 5: Solve for x
    x = 609,303,608.47/28,220.66
  6. Step 6: Final answer
    x = 21,590.69

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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.