Home / 15,933.39-21,987.96-8,859.75

Finding the Fourth Proportional to 15,933.39, 21,987.96 and 8,859.75

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Solution

The fourth proportional to 15,933.39, 21,987.96 and 8,859.75 is: 12,226.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.39 : 21,987.96 = 8,859.75 : x
  2. Step 2: Convert to fraction form
    15,933.39/21,987.96 = 8,859.75/x
  3. Step 3: Cross multiply
    15,933.39x = 21,987.96 × 8,859.75
  4. Step 4: Simplify right side
    15,933.39x = 194,807,828.61
  5. Step 5: Solve for x
    x = 194,807,828.61/15,933.39
  6. Step 6: Final answer
    x = 12,226.39

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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.