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Finding the Fourth Proportional to 11,010.13, 16,510.95 and 3,988.06

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Solution

The fourth proportional to 11,010.13, 16,510.95 and 3,988.06 is: 5,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,010.13 : 16,510.95 = 3,988.06 : x
  2. Step 2: Convert to fraction form
    11,010.13/16,510.95 = 3,988.06/x
  3. Step 3: Cross multiply
    11,010.13x = 16,510.95 × 3,988.06
  4. Step 4: Simplify right side
    11,010.13x = 65,846,617.98
  5. Step 5: Solve for x
    x = 65,846,617.98/11,010.13
  6. Step 6: Final answer
    x = 5,980.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.