Home / 21,240.30-31,837.34-10,685.04

Finding the Fourth Proportional to 21,240.30, 31,837.34 and 10,685.04

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Solution

The fourth proportional to 21,240.30, 31,837.34 and 10,685.04 is: 16,015.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.30 : 31,837.34 = 10,685.04 : x
  2. Step 2: Convert to fraction form
    21,240.30/31,837.34 = 10,685.04/x
  3. Step 3: Cross multiply
    21,240.30x = 31,837.34 × 10,685.04
  4. Step 4: Simplify right side
    21,240.30x = 340,183,251.39
  5. Step 5: Solve for x
    x = 340,183,251.39/21,240.30
  6. Step 6: Final answer
    x = 16,015.93

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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.