Home / 21,937.89-30,274.31-11,866.30

Finding the Fourth Proportional to 21,937.89, 30,274.31 and 11,866.30

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Solution

The fourth proportional to 21,937.89, 30,274.31 and 11,866.30 is: 16,375.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,937.89 : 30,274.31 = 11,866.30 : x
  2. Step 2: Convert to fraction form
    21,937.89/30,274.31 = 11,866.30/x
  3. Step 3: Cross multiply
    21,937.89x = 30,274.31 × 11,866.30
  4. Step 4: Simplify right side
    21,937.89x = 359,243,931.99
  5. Step 5: Solve for x
    x = 359,243,931.99/21,937.89
  6. Step 6: Final answer
    x = 16,375.50

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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.