Home / 15,663.42-21,615.51-8,589.99

Finding the Fourth Proportional to 15,663.42, 21,615.51 and 8,589.99

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Solution

The fourth proportional to 15,663.42, 21,615.51 and 8,589.99 is: 11,854.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,663.42 : 21,615.51 = 8,589.99 : x
  2. Step 2: Convert to fraction form
    15,663.42/21,615.51 = 8,589.99/x
  3. Step 3: Cross multiply
    15,663.42x = 21,615.51 × 8,589.99
  4. Step 4: Simplify right side
    15,663.42x = 185,677,014.74
  5. Step 5: Solve for x
    x = 185,677,014.74/15,663.42
  6. Step 6: Final answer
    x = 11,854.18

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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.