Home / 20,882.60-31,323.90-19,586.60

Finding the Fourth Proportional to 20,882.60, 31,323.90 and 19,586.60

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Solution

The fourth proportional to 20,882.60, 31,323.90 and 19,586.60 is: 29,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.60 : 31,323.90 = 19,586.60 : x
  2. Step 2: Convert to fraction form
    20,882.60/31,323.90 = 19,586.60/x
  3. Step 3: Cross multiply
    20,882.60x = 31,323.90 × 19,586.60
  4. Step 4: Simplify right side
    20,882.60x = 613,528,699.74
  5. Step 5: Solve for x
    x = 613,528,699.74/20,882.60
  6. Step 6: Final answer
    x = 29,379.90

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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.