Home / 21,617.89-32,368.21-11,207.77

Finding the Fourth Proportional to 21,617.89, 32,368.21 and 11,207.77

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Solution

The fourth proportional to 21,617.89, 32,368.21 and 11,207.77 is: 16,781.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.89 : 32,368.21 = 11,207.77 : x
  2. Step 2: Convert to fraction form
    21,617.89/32,368.21 = 11,207.77/x
  3. Step 3: Cross multiply
    21,617.89x = 32,368.21 × 11,207.77
  4. Step 4: Simplify right side
    21,617.89x = 362,775,344.05
  5. Step 5: Solve for x
    x = 362,775,344.05/21,617.89
  6. Step 6: Final answer
    x = 16,781.26

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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.