Home / 15,408.90-21,264.17-8,335.31

Finding the Fourth Proportional to 15,408.90, 21,264.17 and 8,335.31

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Solution

The fourth proportional to 15,408.90, 21,264.17 and 8,335.31 is: 11,502.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.90 : 21,264.17 = 8,335.31 : x
  2. Step 2: Convert to fraction form
    15,408.90/21,264.17 = 8,335.31/x
  3. Step 3: Cross multiply
    15,408.90x = 21,264.17 × 8,335.31
  4. Step 4: Simplify right side
    15,408.90x = 177,243,300.85
  5. Step 5: Solve for x
    x = 177,243,300.85/15,408.90
  6. Step 6: Final answer
    x = 11,502.66

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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.