Home / 15,605.28-21,536.30-8,891.12

Finding the Fourth Proportional to 15,605.28, 21,536.30 and 8,891.12

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Solution

The fourth proportional to 15,605.28, 21,536.30 and 8,891.12 is: 12,270.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.28 : 21,536.30 = 8,891.12 : x
  2. Step 2: Convert to fraction form
    15,605.28/21,536.30 = 8,891.12/x
  3. Step 3: Cross multiply
    15,605.28x = 21,536.30 × 8,891.12
  4. Step 4: Simplify right side
    15,605.28x = 191,481,827.66
  5. Step 5: Solve for x
    x = 191,481,827.66/15,605.28
  6. Step 6: Final answer
    x = 12,270.32

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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.