Home / 15,297.39-21,109.95-9,327.96

Finding the Fourth Proportional to 15,297.39, 21,109.95 and 9,327.96

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Solution

The fourth proportional to 15,297.39, 21,109.95 and 9,327.96 is: 12,872.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.39 : 21,109.95 = 9,327.96 : x
  2. Step 2: Convert to fraction form
    15,297.39/21,109.95 = 9,327.96/x
  3. Step 3: Cross multiply
    15,297.39x = 21,109.95 × 9,327.96
  4. Step 4: Simplify right side
    15,297.39x = 196,912,769.20
  5. Step 5: Solve for x
    x = 196,912,769.20/15,297.39
  6. Step 6: Final answer
    x = 12,872.31

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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.