Home / 18,817.47-28,220.29-6,808.07

Finding the Fourth Proportional to 18,817.47, 28,220.29 and 6,808.07

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Solution

The fourth proportional to 18,817.47, 28,220.29 and 6,808.07 is: 10,209.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.47 : 28,220.29 = 6,808.07 : x
  2. Step 2: Convert to fraction form
    18,817.47/28,220.29 = 6,808.07/x
  3. Step 3: Cross multiply
    18,817.47x = 28,220.29 × 6,808.07
  4. Step 4: Simplify right side
    18,817.47x = 192,125,763.27
  5. Step 5: Solve for x
    x = 192,125,763.27/18,817.47
  6. Step 6: Final answer
    x = 10,209.97

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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.