Home / 15,605.78-21,536.31-8,532.86

Finding the Fourth Proportional to 15,605.78, 21,536.31 and 8,532.86

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Solution

The fourth proportional to 15,605.78, 21,536.31 and 8,532.86 is: 11,775.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.78 : 21,536.31 = 8,532.86 : x
  2. Step 2: Convert to fraction form
    15,605.78/21,536.31 = 8,532.86/x
  3. Step 3: Cross multiply
    15,605.78x = 21,536.31 × 8,532.86
  4. Step 4: Simplify right side
    15,605.78x = 183,766,318.15
  5. Step 5: Solve for x
    x = 183,766,318.15/15,605.78
  6. Step 6: Final answer
    x = 11,775.53

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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.