Home / 20,633.64-28,475.02-11,202.80

Finding the Fourth Proportional to 20,633.64, 28,475.02 and 11,202.80

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Solution

The fourth proportional to 20,633.64, 28,475.02 and 11,202.80 is: 15,460.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.64 : 28,475.02 = 11,202.80 : x
  2. Step 2: Convert to fraction form
    20,633.64/28,475.02 = 11,202.80/x
  3. Step 3: Cross multiply
    20,633.64x = 28,475.02 × 11,202.80
  4. Step 4: Simplify right side
    20,633.64x = 318,999,954.06
  5. Step 5: Solve for x
    x = 318,999,954.06/20,633.64
  6. Step 6: Final answer
    x = 15,460.19

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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.