Home / 15,687.93-21,648.60-8,614.47

Finding the Fourth Proportional to 15,687.93, 21,648.60 and 8,614.47

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Solution

The fourth proportional to 15,687.93, 21,648.60 and 8,614.47 is: 11,887.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687.93 : 21,648.60 = 8,614.47 : x
  2. Step 2: Convert to fraction form
    15,687.93/21,648.60 = 8,614.47/x
  3. Step 3: Cross multiply
    15,687.93x = 21,648.60 × 8,614.47
  4. Step 4: Simplify right side
    15,687.93x = 186,491,215.24
  5. Step 5: Solve for x
    x = 186,491,215.24/15,687.93
  6. Step 6: Final answer
    x = 11,887.56

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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.