Home / 20,262.40-27,950.88-11,877.28

Finding the Fourth Proportional to 20,262.40, 27,950.88 and 11,877.28

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Solution

The fourth proportional to 20,262.40, 27,950.88 and 11,877.28 is: 16,384.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,262.40 : 27,950.88 = 11,877.28 : x
  2. Step 2: Convert to fraction form
    20,262.40/27,950.88 = 11,877.28/x
  3. Step 3: Cross multiply
    20,262.40x = 27,950.88 × 11,877.28
  4. Step 4: Simplify right side
    20,262.40x = 331,980,428.01
  5. Step 5: Solve for x
    x = 331,980,428.01/20,262.40
  6. Step 6: Final answer
    x = 16,384.06

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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.