Home / 21,665.70-32,501.99-9,185.78

Finding the Fourth Proportional to 21,665.70, 32,501.99 and 9,185.78

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Solution

The fourth proportional to 21,665.70, 32,501.99 and 9,185.78 is: 13,780.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,665.70 : 32,501.99 = 9,185.78 : x
  2. Step 2: Convert to fraction form
    21,665.70/32,501.99 = 9,185.78/x
  3. Step 3: Cross multiply
    21,665.70x = 32,501.99 × 9,185.78
  4. Step 4: Simplify right side
    21,665.70x = 298,556,129.70
  5. Step 5: Solve for x
    x = 298,556,129.70/21,665.70
  6. Step 6: Final answer
    x = 13,780.13

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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.