Home / 28,099.89-38,777.39-15,352.79

Finding the Fourth Proportional to 28,099.89, 38,777.39 and 15,352.79

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Solution

The fourth proportional to 28,099.89, 38,777.39 and 15,352.79 is: 21,186.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.89 : 38,777.39 = 15,352.79 : x
  2. Step 2: Convert to fraction form
    28,099.89/38,777.39 = 15,352.79/x
  3. Step 3: Cross multiply
    28,099.89x = 38,777.39 × 15,352.79
  4. Step 4: Simplify right side
    28,099.89x = 595,341,275.88
  5. Step 5: Solve for x
    x = 595,341,275.88/28,099.89
  6. Step 6: Final answer
    x = 21,186.61

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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.