Home / 18,852.39-28,278.57-4,812.42

Finding the Fourth Proportional to 18,852.39, 28,278.57 and 4,812.42

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Solution

The fourth proportional to 18,852.39, 28,278.57 and 4,812.42 is: 7,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,852.39 : 28,278.57 = 4,812.42 : x
  2. Step 2: Convert to fraction form
    18,852.39/28,278.57 = 4,812.42/x
  3. Step 3: Cross multiply
    18,852.39x = 28,278.57 × 4,812.42
  4. Step 4: Simplify right side
    18,852.39x = 136,088,355.84
  5. Step 5: Solve for x
    x = 136,088,355.84/18,852.39
  6. Step 6: Final answer
    x = 7,218.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.