Home / 11,718.35-16,165.73-7,240.49

Finding the Fourth Proportional to 11,718.35, 16,165.73 and 7,240.49

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Solution

The fourth proportional to 11,718.35, 16,165.73 and 7,240.49 is: 9,988.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.35 : 16,165.73 = 7,240.49 : x
  2. Step 2: Convert to fraction form
    11,718.35/16,165.73 = 7,240.49/x
  3. Step 3: Cross multiply
    11,718.35x = 16,165.73 × 7,240.49
  4. Step 4: Simplify right side
    11,718.35x = 117,047,689.38
  5. Step 5: Solve for x
    x = 117,047,689.38/11,718.35
  6. Step 6: Final answer
    x = 9,988.41

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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.