Home / 15,667.80-21,620.19-8,952.09

Finding the Fourth Proportional to 15,667.80, 21,620.19 and 8,952.09

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Solution

The fourth proportional to 15,667.80, 21,620.19 and 8,952.09 is: 12,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,667.80 : 21,620.19 = 8,952.09 : x
  2. Step 2: Convert to fraction form
    15,667.80/21,620.19 = 8,952.09/x
  3. Step 3: Cross multiply
    15,667.80x = 21,620.19 × 8,952.09
  4. Step 4: Simplify right side
    15,667.80x = 193,545,886.70
  5. Step 5: Solve for x
    x = 193,545,886.70/15,667.80
  6. Step 6: Final answer
    x = 12,353.10

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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.