Home / 18,767.79-28,156.55-7,081.11

Finding the Fourth Proportional to 18,767.79, 28,156.55 and 7,081.11

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Solution

The fourth proportional to 18,767.79, 28,156.55 and 7,081.11 is: 10,623.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.79 : 28,156.55 = 7,081.11 : x
  2. Step 2: Convert to fraction form
    18,767.79/28,156.55 = 7,081.11/x
  3. Step 3: Cross multiply
    18,767.79x = 28,156.55 × 7,081.11
  4. Step 4: Simplify right side
    18,767.79x = 199,379,592.36
  5. Step 5: Solve for x
    x = 199,379,592.36/18,767.79
  6. Step 6: Final answer
    x = 10,623.50

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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.