Home / 21,515.60-32,273.40-18,837.20

Finding the Fourth Proportional to 21,515.60, 32,273.40 and 18,837.20

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Solution

The fourth proportional to 21,515.60, 32,273.40 and 18,837.20 is: 28,255.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.60 : 32,273.40 = 18,837.20 : x
  2. Step 2: Convert to fraction form
    21,515.60/32,273.40 = 18,837.20/x
  3. Step 3: Cross multiply
    21,515.60x = 32,273.40 × 18,837.20
  4. Step 4: Simplify right side
    21,515.60x = 607,940,490.48
  5. Step 5: Solve for x
    x = 607,940,490.48/21,515.60
  6. Step 6: Final answer
    x = 28,255.80

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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.