Home / 15,733.44-21,712-8,659.68

Finding the Fourth Proportional to 15,733.44, 21,712 and 8,659.68

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Solution

The fourth proportional to 15,733.44, 21,712 and 8,659.68 is: 11,950.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,733.44 : 21,712 = 8,659.68 : x
  2. Step 2: Convert to fraction form
    15,733.44/21,712 = 8,659.68/x
  3. Step 3: Cross multiply
    15,733.44x = 21,712 × 8,659.68
  4. Step 4: Simplify right side
    15,733.44x = 188,018,972.16
  5. Step 5: Solve for x
    x = 188,018,972.16/15,733.44
  6. Step 6: Final answer
    x = 11,950.28

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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.