Home / 28,099.98-38,776.83-15,353.61

Finding the Fourth Proportional to 28,099.98, 38,776.83 and 15,353.61

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Solution

The fourth proportional to 28,099.98, 38,776.83 and 15,353.61 is: 21,187.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.98 : 38,776.83 = 15,353.61 : x
  2. Step 2: Convert to fraction form
    28,099.98/38,776.83 = 15,353.61/x
  3. Step 3: Cross multiply
    28,099.98x = 38,776.83 × 15,353.61
  4. Step 4: Simplify right side
    28,099.98x = 595,364,324.86
  5. Step 5: Solve for x
    x = 595,364,324.86/28,099.98
  6. Step 6: Final answer
    x = 21,187.36

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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.