Home / 21,350.07-31,982.16-10,644.12

Finding the Fourth Proportional to 21,350.07, 31,982.16 and 10,644.12

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Solution

The fourth proportional to 21,350.07, 31,982.16 and 10,644.12 is: 15,944.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.07 : 31,982.16 = 10,644.12 : x
  2. Step 2: Convert to fraction form
    21,350.07/31,982.16 = 10,644.12/x
  3. Step 3: Cross multiply
    21,350.07x = 31,982.16 × 10,644.12
  4. Step 4: Simplify right side
    21,350.07x = 340,421,948.90
  5. Step 5: Solve for x
    x = 340,421,948.90/21,350.07
  6. Step 6: Final answer
    x = 15,944.77

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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.