Home / 21,819.37-32,731.62-7,781.39

Finding the Fourth Proportional to 21,819.37, 32,731.62 and 7,781.39

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Solution

The fourth proportional to 21,819.37, 32,731.62 and 7,781.39 is: 11,673.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,819.37 : 32,731.62 = 7,781.39 : x
  2. Step 2: Convert to fraction form
    21,819.37/32,731.62 = 7,781.39/x
  3. Step 3: Cross multiply
    21,819.37x = 32,731.62 × 7,781.39
  4. Step 4: Simplify right side
    21,819.37x = 254,697,567.79
  5. Step 5: Solve for x
    x = 254,697,567.79/21,819.37
  6. Step 6: Final answer
    x = 11,673.00

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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.