Home / 28,018.11-38,665.17-15,442.86

Finding the Fourth Proportional to 28,018.11, 38,665.17 and 15,442.86

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Solution

The fourth proportional to 28,018.11, 38,665.17 and 15,442.86 is: 21,311.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.11 : 38,665.17 = 15,442.86 : x
  2. Step 2: Convert to fraction form
    28,018.11/38,665.17 = 15,442.86/x
  3. Step 3: Cross multiply
    28,018.11x = 38,665.17 × 15,442.86
  4. Step 4: Simplify right side
    28,018.11x = 597,100,807.19
  5. Step 5: Solve for x
    x = 597,100,807.19/28,018.11
  6. Step 6: Final answer
    x = 21,311.25

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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.