Home / 15,408.75-21,263.99-8,335.15

Finding the Fourth Proportional to 15,408.75, 21,263.99 and 8,335.15

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Solution

The fourth proportional to 15,408.75, 21,263.99 and 8,335.15 is: 11,502.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.75 : 21,263.99 = 8,335.15 : x
  2. Step 2: Convert to fraction form
    15,408.75/21,263.99 = 8,335.15/x
  3. Step 3: Cross multiply
    15,408.75x = 21,263.99 × 8,335.15
  4. Step 4: Simplify right side
    15,408.75x = 177,238,546.25
  5. Step 5: Solve for x
    x = 177,238,546.25/15,408.75
  6. Step 6: Final answer
    x = 11,502.46

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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.