Home / 28,018.16-38,665.32-15,442.96

Finding the Fourth Proportional to 28,018.16, 38,665.32 and 15,442.96

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Solution

The fourth proportional to 28,018.16, 38,665.32 and 15,442.96 is: 21,311.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.16 : 38,665.32 = 15,442.96 : x
  2. Step 2: Convert to fraction form
    28,018.16/38,665.32 = 15,442.96/x
  3. Step 3: Cross multiply
    28,018.16x = 38,665.32 × 15,442.96
  4. Step 4: Simplify right side
    28,018.16x = 597,106,990.15
  5. Step 5: Solve for x
    x = 597,106,990.15/28,018.16
  6. Step 6: Final answer
    x = 21,311.43

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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.