Home / 15,381.78-21,226.94-8,667.52

Finding the Fourth Proportional to 15,381.78, 21,226.94 and 8,667.52

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Solution

The fourth proportional to 15,381.78, 21,226.94 and 8,667.52 is: 11,961.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.78 : 21,226.94 = 8,667.52 : x
  2. Step 2: Convert to fraction form
    15,381.78/21,226.94 = 8,667.52/x
  3. Step 3: Cross multiply
    15,381.78x = 21,226.94 × 8,667.52
  4. Step 4: Simplify right side
    15,381.78x = 183,984,926.99
  5. Step 5: Solve for x
    x = 183,984,926.99/15,381.78
  6. Step 6: Final answer
    x = 11,961.22

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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.