Home / 21,296.25-31,972.65-18,196.17

Finding the Fourth Proportional to 21,296.25, 31,972.65 and 18,196.17

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Solution

The fourth proportional to 21,296.25, 31,972.65 and 18,196.17 is: 27,318.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.25 : 31,972.65 = 18,196.17 : x
  2. Step 2: Convert to fraction form
    21,296.25/31,972.65 = 18,196.17/x
  3. Step 3: Cross multiply
    21,296.25x = 31,972.65 × 18,196.17
  4. Step 4: Simplify right side
    21,296.25x = 581,779,774.75
  5. Step 5: Solve for x
    x = 581,779,774.75/21,296.25
  6. Step 6: Final answer
    x = 27,318.41

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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.