Home / 28,074.61-38,743.14-15,499.36

Finding the Fourth Proportional to 28,074.61, 38,743.14 and 15,499.36

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Solution

The fourth proportional to 28,074.61, 38,743.14 and 15,499.36 is: 21,389.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.61 : 38,743.14 = 15,499.36 : x
  2. Step 2: Convert to fraction form
    28,074.61/38,743.14 = 15,499.36/x
  3. Step 3: Cross multiply
    28,074.61x = 38,743.14 × 15,499.36
  4. Step 4: Simplify right side
    28,074.61x = 600,493,874.39
  5. Step 5: Solve for x
    x = 600,493,874.39/28,074.61
  6. Step 6: Final answer
    x = 21,389.22

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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.