Home / 15,346.38-21,178.77-8,634.12

Finding the Fourth Proportional to 15,346.38, 21,178.77 and 8,634.12

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Solution

The fourth proportional to 15,346.38, 21,178.77 and 8,634.12 is: 11,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,346.38 : 21,178.77 = 8,634.12 : x
  2. Step 2: Convert to fraction form
    15,346.38/21,178.77 = 8,634.12/x
  3. Step 3: Cross multiply
    15,346.38x = 21,178.77 × 8,634.12
  4. Step 4: Simplify right side
    15,346.38x = 182,860,041.63
  5. Step 5: Solve for x
    x = 182,860,041.63/15,346.38
  6. Step 6: Final answer
    x = 11,915.52

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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.