Home / 11,108.95-15,331.70-6,393.13

Finding the Fourth Proportional to 11,108.95, 15,331.70 and 6,393.13

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Solution

The fourth proportional to 11,108.95, 15,331.70 and 6,393.13 is: 8,823.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.95 : 15,331.70 = 6,393.13 : x
  2. Step 2: Convert to fraction form
    11,108.95/15,331.70 = 6,393.13/x
  3. Step 3: Cross multiply
    11,108.95x = 15,331.70 × 6,393.13
  4. Step 4: Simplify right side
    11,108.95x = 98,017,551.22
  5. Step 5: Solve for x
    x = 98,017,551.22/11,108.95
  6. Step 6: Final answer
    x = 8,823.30

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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.