Home / 21,972.48-30,322.05-11,900.94

Finding the Fourth Proportional to 21,972.48, 30,322.05 and 11,900.94

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Solution

The fourth proportional to 21,972.48, 30,322.05 and 11,900.94 is: 16,423.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.48 : 30,322.05 = 11,900.94 : x
  2. Step 2: Convert to fraction form
    21,972.48/30,322.05 = 11,900.94/x
  3. Step 3: Cross multiply
    21,972.48x = 30,322.05 × 11,900.94
  4. Step 4: Simplify right side
    21,972.48x = 360,860,897.73
  5. Step 5: Solve for x
    x = 360,860,897.73/21,972.48
  6. Step 6: Final answer
    x = 16,423.31

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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.