Home / 39,855.61-55,001.11-21,950.68

Finding the Fourth Proportional to 39,855.61, 55,001.11 and 21,950.68

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Solution

The fourth proportional to 39,855.61, 55,001.11 and 21,950.68 is: 30,292.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,855.61 : 55,001.11 = 21,950.68 : x
  2. Step 2: Convert to fraction form
    39,855.61/55,001.11 = 21,950.68/x
  3. Step 3: Cross multiply
    39,855.61x = 55,001.11 × 21,950.68
  4. Step 4: Simplify right side
    39,855.61x = 1,207,311,717.16
  5. Step 5: Solve for x
    x = 1,207,311,717.16/39,855.61
  6. Step 6: Final answer
    x = 30,292.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.