Home / 20,943.06-28,901.44-11,512.24

Finding the Fourth Proportional to 20,943.06, 28,901.44 and 11,512.24

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Solution

The fourth proportional to 20,943.06, 28,901.44 and 11,512.24 is: 15,886.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.06 : 28,901.44 = 11,512.24 : x
  2. Step 2: Convert to fraction form
    20,943.06/28,901.44 = 11,512.24/x
  3. Step 3: Cross multiply
    20,943.06x = 28,901.44 × 11,512.24
  4. Step 4: Simplify right side
    20,943.06x = 332,720,313.63
  5. Step 5: Solve for x
    x = 332,720,313.63/20,943.06
  6. Step 6: Final answer
    x = 15,886.90

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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.