Home / 28,105.01-38,784.44-15,357.91

Finding the Fourth Proportional to 28,105.01, 38,784.44 and 15,357.91

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Solution

The fourth proportional to 28,105.01, 38,784.44 and 15,357.91 is: 21,193.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,105.01 : 38,784.44 = 15,357.91 : x
  2. Step 2: Convert to fraction form
    28,105.01/38,784.44 = 15,357.91/x
  3. Step 3: Cross multiply
    28,105.01x = 38,784.44 × 15,357.91
  4. Step 4: Simplify right side
    28,105.01x = 595,647,862.13
  5. Step 5: Solve for x
    x = 595,647,862.13/28,105.01
  6. Step 6: Final answer
    x = 21,193.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.