Home / 18,681.12-28,016.82-5,529.96

Finding the Fourth Proportional to 18,681.12, 28,016.82 and 5,529.96

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Solution

The fourth proportional to 18,681.12, 28,016.82 and 5,529.96 is: 8,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.12 : 28,016.82 = 5,529.96 : x
  2. Step 2: Convert to fraction form
    18,681.12/28,016.82 = 5,529.96/x
  3. Step 3: Cross multiply
    18,681.12x = 28,016.82 × 5,529.96
  4. Step 4: Simplify right side
    18,681.12x = 154,931,893.93
  5. Step 5: Solve for x
    x = 154,931,893.93/18,681.12
  6. Step 6: Final answer
    x = 8,293.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.