Home / 15,408.45-21,264.30-9,741.15

Finding the Fourth Proportional to 15,408.45, 21,264.30 and 9,741.15

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Solution

The fourth proportional to 15,408.45, 21,264.30 and 9,741.15 is: 13,443.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.45 : 21,264.30 = 9,741.15 : x
  2. Step 2: Convert to fraction form
    15,408.45/21,264.30 = 9,741.15/x
  3. Step 3: Cross multiply
    15,408.45x = 21,264.30 × 9,741.15
  4. Step 4: Simplify right side
    15,408.45x = 207,138,735.95
  5. Step 5: Solve for x
    x = 207,138,735.95/15,408.45
  6. Step 6: Final answer
    x = 13,443.19

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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.