Home / 21,167.08-29,207.68-12,667.22

Finding the Fourth Proportional to 21,167.08, 29,207.68 and 12,667.22

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Solution

The fourth proportional to 21,167.08, 29,207.68 and 12,667.22 is: 17,479.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.08 : 29,207.68 = 12,667.22 : x
  2. Step 2: Convert to fraction form
    21,167.08/29,207.68 = 12,667.22/x
  3. Step 3: Cross multiply
    21,167.08x = 29,207.68 × 12,667.22
  4. Step 4: Simplify right side
    21,167.08x = 369,980,108.25
  5. Step 5: Solve for x
    x = 369,980,108.25/21,167.08
  6. Step 6: Final answer
    x = 17,479.03

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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.