Home / 11,755.18-16,221.53-6,718.74

Finding the Fourth Proportional to 11,755.18, 16,221.53 and 6,718.74

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Solution

The fourth proportional to 11,755.18, 16,221.53 and 6,718.74 is: 9,271.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,755.18 : 16,221.53 = 6,718.74 : x
  2. Step 2: Convert to fraction form
    11,755.18/16,221.53 = 6,718.74/x
  3. Step 3: Cross multiply
    11,755.18x = 16,221.53 × 6,718.74
  4. Step 4: Simplify right side
    11,755.18x = 108,988,242.47
  5. Step 5: Solve for x
    x = 108,988,242.47/11,755.18
  6. Step 6: Final answer
    x = 9,271.51

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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.