Home / 21,322.04-31,960.72-11,948.32

Finding the Fourth Proportional to 21,322.04, 31,960.72 and 11,948.32

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Solution

The fourth proportional to 21,322.04, 31,960.72 and 11,948.32 is: 17,909.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.04 : 31,960.72 = 11,948.32 : x
  2. Step 2: Convert to fraction form
    21,322.04/31,960.72 = 11,948.32/x
  3. Step 3: Cross multiply
    21,322.04x = 31,960.72 × 11,948.32
  4. Step 4: Simplify right side
    21,322.04x = 381,876,845.02
  5. Step 5: Solve for x
    x = 381,876,845.02/21,322.04
  6. Step 6: Final answer
    x = 17,909.96

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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.