Home / 39,855.40-55,000.46-21,950.36

Finding the Fourth Proportional to 39,855.40, 55,000.46 and 21,950.36

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Solution

The fourth proportional to 39,855.40, 55,000.46 and 21,950.36 is: 30,291.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,855.40 : 55,000.46 = 21,950.36 : x
  2. Step 2: Convert to fraction form
    39,855.40/55,000.46 = 21,950.36/x
  3. Step 3: Cross multiply
    39,855.40x = 55,000.46 × 21,950.36
  4. Step 4: Simplify right side
    39,855.40x = 1,207,279,897.17
  5. Step 5: Solve for x
    x = 1,207,279,897.17/39,855.40
  6. Step 6: Final answer
    x = 30,291.50

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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.