Home / 20,955.56-28,919.46-11,523.88

Finding the Fourth Proportional to 20,955.56, 28,919.46 and 11,523.88

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Solution

The fourth proportional to 20,955.56, 28,919.46 and 11,523.88 is: 15,903.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.56 : 28,919.46 = 11,523.88 : x
  2. Step 2: Convert to fraction form
    20,955.56/28,919.46 = 11,523.88/x
  3. Step 3: Cross multiply
    20,955.56x = 28,919.46 × 11,523.88
  4. Step 4: Simplify right side
    20,955.56x = 333,264,386.70
  5. Step 5: Solve for x
    x = 333,264,386.70/20,955.56
  6. Step 6: Final answer
    x = 15,903.39

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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.