Home / 15,663.26-21,615.32-8,589.84

Finding the Fourth Proportional to 15,663.26, 21,615.32 and 8,589.84

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Solution

The fourth proportional to 15,663.26, 21,615.32 and 8,589.84 is: 11,853.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,663.26 : 21,615.32 = 8,589.84 : x
  2. Step 2: Convert to fraction form
    15,663.26/21,615.32 = 8,589.84/x
  3. Step 3: Cross multiply
    15,663.26x = 21,615.32 × 8,589.84
  4. Step 4: Simplify right side
    15,663.26x = 185,672,140.35
  5. Step 5: Solve for x
    x = 185,672,140.35/15,663.26
  6. Step 6: Final answer
    x = 11,853.99

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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.