Home / 15,663.16-21,615.09-8,589.58

Finding the Fourth Proportional to 15,663.16, 21,615.09 and 8,589.58

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Solution

The fourth proportional to 15,663.16, 21,615.09 and 8,589.58 is: 11,853.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,663.16 : 21,615.09 = 8,589.58 : x
  2. Step 2: Convert to fraction form
    15,663.16/21,615.09 = 8,589.58/x
  3. Step 3: Cross multiply
    15,663.16x = 21,615.09 × 8,589.58
  4. Step 4: Simplify right side
    15,663.16x = 185,664,544.76
  5. Step 5: Solve for x
    x = 185,664,544.76/15,663.16
  6. Step 6: Final answer
    x = 11,853.58

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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.