Home / 28,377.74-39,160.96-15,630.68

Finding the Fourth Proportional to 28,377.74, 39,160.96 and 15,630.68

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Solution

The fourth proportional to 28,377.74, 39,160.96 and 15,630.68 is: 21,570.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.74 : 39,160.96 = 15,630.68 : x
  2. Step 2: Convert to fraction form
    28,377.74/39,160.96 = 15,630.68/x
  3. Step 3: Cross multiply
    28,377.74x = 39,160.96 × 15,630.68
  4. Step 4: Simplify right side
    28,377.74x = 612,112,434.25
  5. Step 5: Solve for x
    x = 612,112,434.25/28,377.74
  6. Step 6: Final answer
    x = 21,570.16

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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.