Home / 15,784.55-21,876.73-15,489.30

Finding the Fourth Proportional to 15,784.55, 21,876.73 and 15,489.30

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Solution

The fourth proportional to 15,784.55, 21,876.73 and 15,489.30 is: 21,467.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,784.55 : 21,876.73 = 15,489.30 : x
  2. Step 2: Convert to fraction form
    15,784.55/21,876.73 = 15,489.30/x
  3. Step 3: Cross multiply
    15,784.55x = 21,876.73 × 15,489.30
  4. Step 4: Simplify right side
    15,784.55x = 338,855,195.27
  5. Step 5: Solve for x
    x = 338,855,195.27/15,784.55
  6. Step 6: Final answer
    x = 21,467.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.