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Finding the Fourth Proportional to 15,992.68, 22,068.96 and 8,918.84

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Solution

The fourth proportional to 15,992.68, 22,068.96 and 8,918.84 is: 12,307.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,992.68 : 22,068.96 = 8,918.84 : x
  2. Step 2: Convert to fraction form
    15,992.68/22,068.96 = 8,918.84/x
  3. Step 3: Cross multiply
    15,992.68x = 22,068.96 × 8,918.84
  4. Step 4: Simplify right side
    15,992.68x = 196,829,523.21
  5. Step 5: Solve for x
    x = 196,829,523.21/15,992.68
  6. Step 6: Final answer
    x = 12,307.48

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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.