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Finding the Fourth Proportional to 8,988.06, 13,411.78 and 8,054.11

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Solution

The fourth proportional to 8,988.06, 13,411.78 and 8,054.11 is: 12,018.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.06 : 13,411.78 = 8,054.11 : x
  2. Step 2: Convert to fraction form
    8,988.06/13,411.78 = 8,054.11/x
  3. Step 3: Cross multiply
    8,988.06x = 13,411.78 × 8,054.11
  4. Step 4: Simplify right side
    8,988.06x = 108,019,844.09
  5. Step 5: Solve for x
    x = 108,019,844.09/8,988.06
  6. Step 6: Final answer
    x = 12,018.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.