Home / 28,018.96-38,670.42-15,922.96

Finding the Fourth Proportional to 28,018.96, 38,670.42 and 15,922.96

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Solution

The fourth proportional to 28,018.96, 38,670.42 and 15,922.96 is: 21,976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.96 : 38,670.42 = 15,922.96 : x
  2. Step 2: Convert to fraction form
    28,018.96/38,670.42 = 15,922.96/x
  3. Step 3: Cross multiply
    28,018.96x = 38,670.42 × 15,922.96
  4. Step 4: Simplify right side
    28,018.96x = 615,747,550.84
  5. Step 5: Solve for x
    x = 615,747,550.84/28,018.96
  6. Step 6: Final answer
    x = 21,976.10

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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.