Home / 15,663.41-21,615.35-8,589.89

Finding the Fourth Proportional to 15,663.41, 21,615.35 and 8,589.89

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Solution

The fourth proportional to 15,663.41, 21,615.35 and 8,589.89 is: 11,853.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,663.41 : 21,615.35 = 8,589.89 : x
  2. Step 2: Convert to fraction form
    15,663.41/21,615.35 = 8,589.89/x
  3. Step 3: Cross multiply
    15,663.41x = 21,615.35 × 8,589.89
  4. Step 4: Simplify right side
    15,663.41x = 185,673,327.79
  5. Step 5: Solve for x
    x = 185,673,327.79/15,663.41
  6. Step 6: Final answer
    x = 11,853.96

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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.