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Finding the Fourth Proportional to 17,878.12, 26,824.77 and 8,988.76

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Solution

The fourth proportional to 17,878.12, 26,824.77 and 8,988.76 is: 13,486.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,878.12 : 26,824.77 = 8,988.76 : x
  2. Step 2: Convert to fraction form
    17,878.12/26,824.77 = 8,988.76/x
  3. Step 3: Cross multiply
    17,878.12x = 26,824.77 × 8,988.76
  4. Step 4: Simplify right side
    17,878.12x = 241,121,415.39
  5. Step 5: Solve for x
    x = 241,121,415.39/17,878.12
  6. Step 6: Final answer
    x = 13,486.96

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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.