Home / 21,274.68-31,918.56-10,893.72

Finding the Fourth Proportional to 21,274.68, 31,918.56 and 10,893.72

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Solution

The fourth proportional to 21,274.68, 31,918.56 and 10,893.72 is: 16,343.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.68 : 31,918.56 = 10,893.72 : x
  2. Step 2: Convert to fraction form
    21,274.68/31,918.56 = 10,893.72/x
  3. Step 3: Cross multiply
    21,274.68x = 31,918.56 × 10,893.72
  4. Step 4: Simplify right side
    21,274.68x = 347,711,855.44
  5. Step 5: Solve for x
    x = 347,711,855.44/21,274.68
  6. Step 6: Final answer
    x = 16,343.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.