Home / 20,976.13-28,947.06-11,544.49

Finding the Fourth Proportional to 20,976.13, 28,947.06 and 11,544.49

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Solution

The fourth proportional to 20,976.13, 28,947.06 and 11,544.49 is: 15,931.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.13 : 28,947.06 = 11,544.49 : x
  2. Step 2: Convert to fraction form
    20,976.13/28,947.06 = 11,544.49/x
  3. Step 3: Cross multiply
    20,976.13x = 28,947.06 × 11,544.49
  4. Step 4: Simplify right side
    20,976.13x = 334,178,899.96
  5. Step 5: Solve for x
    x = 334,178,899.96/20,976.13
  6. Step 6: Final answer
    x = 15,931.39

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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.