Home / 20,803.59-28,708.83-11,372.22

Finding the Fourth Proportional to 20,803.59, 28,708.83 and 11,372.22

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Solution

The fourth proportional to 20,803.59, 28,708.83 and 11,372.22 is: 15,693.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.59 : 28,708.83 = 11,372.22 : x
  2. Step 2: Convert to fraction form
    20,803.59/28,708.83 = 11,372.22/x
  3. Step 3: Cross multiply
    20,803.59x = 28,708.83 × 11,372.22
  4. Step 4: Simplify right side
    20,803.59x = 326,483,130.70
  5. Step 5: Solve for x
    x = 326,483,130.70/20,803.59
  6. Step 6: Final answer
    x = 15,693.60

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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.