Home / 15,926.96-21,979.96-8,853.50

Finding the Fourth Proportional to 15,926.96, 21,979.96 and 8,853.50

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Solution

The fourth proportional to 15,926.96, 21,979.96 and 8,853.50 is: 12,218.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,926.96 : 21,979.96 = 8,853.50 : x
  2. Step 2: Convert to fraction form
    15,926.96/21,979.96 = 8,853.50/x
  3. Step 3: Cross multiply
    15,926.96x = 21,979.96 × 8,853.50
  4. Step 4: Simplify right side
    15,926.96x = 194,599,531.59
  5. Step 5: Solve for x
    x = 194,599,531.59/15,926.96
  6. Step 6: Final answer
    x = 12,218.25

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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.