Home / 21,584.40-32,279.40-18,085.20

Finding the Fourth Proportional to 21,584.40, 32,279.40 and 18,085.20

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Solution

The fourth proportional to 21,584.40, 32,279.40 and 18,085.20 is: 27,046.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,584.40 : 32,279.40 = 18,085.20 : x
  2. Step 2: Convert to fraction form
    21,584.40/32,279.40 = 18,085.20/x
  3. Step 3: Cross multiply
    21,584.40x = 32,279.40 × 18,085.20
  4. Step 4: Simplify right side
    21,584.40x = 583,779,404.88
  5. Step 5: Solve for x
    x = 583,779,404.88/21,584.40
  6. Step 6: Final answer
    x = 27,046.36

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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.