Home / 21,269.96-31,902.49-5,688.80

Finding the Fourth Proportional to 21,269.96, 31,902.49 and 5,688.80

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Solution

The fourth proportional to 21,269.96, 31,902.49 and 5,688.80 is: 8,532.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.96 : 31,902.49 = 5,688.80 : x
  2. Step 2: Convert to fraction form
    21,269.96/31,902.49 = 5,688.80/x
  3. Step 3: Cross multiply
    21,269.96x = 31,902.49 × 5,688.80
  4. Step 4: Simplify right side
    21,269.96x = 181,486,885.11
  5. Step 5: Solve for x
    x = 181,486,885.11/21,269.96
  6. Step 6: Final answer
    x = 8,532.54

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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.