Home / 18,839.79-28,207.74-12,591.18

Finding the Fourth Proportional to 18,839.79, 28,207.74 and 12,591.18

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Solution

The fourth proportional to 18,839.79, 28,207.74 and 12,591.18 is: 18,852.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,839.79 : 28,207.74 = 12,591.18 : x
  2. Step 2: Convert to fraction form
    18,839.79/28,207.74 = 12,591.18/x
  3. Step 3: Cross multiply
    18,839.79x = 28,207.74 × 12,591.18
  4. Step 4: Simplify right side
    18,839.79x = 355,168,731.73
  5. Step 5: Solve for x
    x = 355,168,731.73/18,839.79
  6. Step 6: Final answer
    x = 18,852.05

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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.