Home / 21,329.83-31,998.23-9,487.68

Finding the Fourth Proportional to 21,329.83, 31,998.23 and 9,487.68

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Solution

The fourth proportional to 21,329.83, 31,998.23 and 9,487.68 is: 14,233.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.83 : 31,998.23 = 9,487.68 : x
  2. Step 2: Convert to fraction form
    21,329.83/31,998.23 = 9,487.68/x
  3. Step 3: Cross multiply
    21,329.83x = 31,998.23 × 9,487.68
  4. Step 4: Simplify right side
    21,329.83x = 303,588,806.82
  5. Step 5: Solve for x
    x = 303,588,806.82/21,329.83
  6. Step 6: Final answer
    x = 14,233.07

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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.