Home / 15,928.96-21,985.68-8,858.08

Finding the Fourth Proportional to 15,928.96, 21,985.68 and 8,858.08

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Solution

The fourth proportional to 15,928.96, 21,985.68 and 8,858.08 is: 12,226.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.96 : 21,985.68 = 8,858.08 : x
  2. Step 2: Convert to fraction form
    15,928.96/21,985.68 = 8,858.08/x
  3. Step 3: Cross multiply
    15,928.96x = 21,985.68 × 8,858.08
  4. Step 4: Simplify right side
    15,928.96x = 194,750,912.29
  5. Step 5: Solve for x
    x = 194,750,912.29/15,928.96
  6. Step 6: Final answer
    x = 12,226.22

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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.