Home / 15,377.25-21,221.39-9,407.05

Finding the Fourth Proportional to 15,377.25, 21,221.39 and 9,407.05

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Solution

The fourth proportional to 15,377.25, 21,221.39 and 9,407.05 is: 12,982.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.25 : 21,221.39 = 9,407.05 : x
  2. Step 2: Convert to fraction form
    15,377.25/21,221.39 = 9,407.05/x
  3. Step 3: Cross multiply
    15,377.25x = 21,221.39 × 9,407.05
  4. Step 4: Simplify right side
    15,377.25x = 199,630,676.80
  5. Step 5: Solve for x
    x = 199,630,676.80/15,377.25
  6. Step 6: Final answer
    x = 12,982.21

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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.