Home / 21,039.10-31,532.34-10,512.07

Finding the Fourth Proportional to 21,039.10, 31,532.34 and 10,512.07

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Solution

The fourth proportional to 21,039.10, 31,532.34 and 10,512.07 is: 15,754.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039.10 : 31,532.34 = 10,512.07 : x
  2. Step 2: Convert to fraction form
    21,039.10/31,532.34 = 10,512.07/x
  3. Step 3: Cross multiply
    21,039.10x = 31,532.34 × 10,512.07
  4. Step 4: Simplify right side
    21,039.10x = 331,469,955.12
  5. Step 5: Solve for x
    x = 331,469,955.12/21,039.10
  6. Step 6: Final answer
    x = 15,754.95

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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.