Home / 28,007.19-38,649.87-15,431.94

Finding the Fourth Proportional to 28,007.19, 38,649.87 and 15,431.94

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Solution

The fourth proportional to 28,007.19, 38,649.87 and 15,431.94 is: 21,296.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.19 : 38,649.87 = 15,431.94 : x
  2. Step 2: Convert to fraction form
    28,007.19/38,649.87 = 15,431.94/x
  3. Step 3: Cross multiply
    28,007.19x = 38,649.87 × 15,431.94
  4. Step 4: Simplify right side
    28,007.19x = 596,442,474.85
  5. Step 5: Solve for x
    x = 596,442,474.85/28,007.19
  6. Step 6: Final answer
    x = 21,296.05

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Double scale
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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.