Home / 11,029.20-15,220.56-6,315

Finding the Fourth Proportional to 11,029.20, 15,220.56 and 6,315

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Solution

The fourth proportional to 11,029.20, 15,220.56 and 6,315 is: 8,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,029.20 : 15,220.56 = 6,315 : x
  2. Step 2: Convert to fraction form
    11,029.20/15,220.56 = 6,315/x
  3. Step 3: Cross multiply
    11,029.20x = 15,220.56 × 6,315
  4. Step 4: Simplify right side
    11,029.20x = 96,117,836.40
  5. Step 5: Solve for x
    x = 96,117,836.40/11,029.20
  6. Step 6: Final answer
    x = 8,714.85

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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.