Home / 21,338.16-29,453.40-20,223.60

Finding the Fourth Proportional to 21,338.16, 29,453.40 and 20,223.60

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Solution

The fourth proportional to 21,338.16, 29,453.40 and 20,223.60 is: 27,914.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.16 : 29,453.40 = 20,223.60 : x
  2. Step 2: Convert to fraction form
    21,338.16/29,453.40 = 20,223.60/x
  3. Step 3: Cross multiply
    21,338.16x = 29,453.40 × 20,223.60
  4. Step 4: Simplify right side
    21,338.16x = 595,653,780.24
  5. Step 5: Solve for x
    x = 595,653,780.24/21,338.16
  6. Step 6: Final answer
    x = 27,914.96

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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.