Home / 18,837.79-28,204.74-12,589.18

Finding the Fourth Proportional to 18,837.79, 28,204.74 and 12,589.18

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Solution

The fourth proportional to 18,837.79, 28,204.74 and 12,589.18 is: 18,849.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,837.79 : 28,204.74 = 12,589.18 : x
  2. Step 2: Convert to fraction form
    18,837.79/28,204.74 = 12,589.18/x
  3. Step 3: Cross multiply
    18,837.79x = 28,204.74 × 12,589.18
  4. Step 4: Simplify right side
    18,837.79x = 355,074,478.20
  5. Step 5: Solve for x
    x = 355,074,478.20/18,837.79
  6. Step 6: Final answer
    x = 18,849.05

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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.