Home / 21,425.35-32,125.72-11,417.77

Finding the Fourth Proportional to 21,425.35, 32,125.72 and 11,417.77

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Solution

The fourth proportional to 21,425.35, 32,125.72 and 11,417.77 is: 17,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.35 : 32,125.72 = 11,417.77 : x
  2. Step 2: Convert to fraction form
    21,425.35/32,125.72 = 11,417.77/x
  3. Step 3: Cross multiply
    21,425.35x = 32,125.72 × 11,417.77
  4. Step 4: Simplify right side
    21,425.35x = 366,804,236.04
  5. Step 5: Solve for x
    x = 366,804,236.04/21,425.35
  6. Step 6: Final answer
    x = 17,120.10

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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.