Home / 15,381.22-21,226.47-8,667.08

Finding the Fourth Proportional to 15,381.22, 21,226.47 and 8,667.08

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Solution

The fourth proportional to 15,381.22, 21,226.47 and 8,667.08 is: 11,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.22 : 21,226.47 = 8,667.08 : x
  2. Step 2: Convert to fraction form
    15,381.22/21,226.47 = 8,667.08/x
  3. Step 3: Cross multiply
    15,381.22x = 21,226.47 × 8,667.08
  4. Step 4: Simplify right side
    15,381.22x = 183,971,513.61
  5. Step 5: Solve for x
    x = 183,971,513.61/15,381.22
  6. Step 6: Final answer
    x = 11,960.79

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Double scale
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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.