Home / 20,976.06-28,947.50-11,416.47

Finding the Fourth Proportional to 20,976.06, 28,947.50 and 11,416.47

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Solution

The fourth proportional to 20,976.06, 28,947.50 and 11,416.47 is: 15,755.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.06 : 28,947.50 = 11,416.47 : x
  2. Step 2: Convert to fraction form
    20,976.06/28,947.50 = 11,416.47/x
  3. Step 3: Cross multiply
    20,976.06x = 28,947.50 × 11,416.47
  4. Step 4: Simplify right side
    20,976.06x = 330,478,256.02
  5. Step 5: Solve for x
    x = 330,478,256.02/20,976.06
  6. Step 6: Final answer
    x = 15,755.02

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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.