Home / 15,418.44-21,278.12-9,751.16

Finding the Fourth Proportional to 15,418.44, 21,278.12 and 9,751.16

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Solution

The fourth proportional to 15,418.44, 21,278.12 and 9,751.16 is: 13,457.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.44 : 21,278.12 = 9,751.16 : x
  2. Step 2: Convert to fraction form
    15,418.44/21,278.12 = 9,751.16/x
  3. Step 3: Cross multiply
    15,418.44x = 21,278.12 × 9,751.16
  4. Step 4: Simplify right side
    15,418.44x = 207,486,352.62
  5. Step 5: Solve for x
    x = 207,486,352.62/15,418.44
  6. Step 6: Final answer
    x = 13,457.03

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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.