Home / 26,945.80-40,418.70-21,308.20

Finding the Fourth Proportional to 26,945.80, 40,418.70 and 21,308.20

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Solution

The fourth proportional to 26,945.80, 40,418.70 and 21,308.20 is: 31,962.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,945.80 : 40,418.70 = 21,308.20 : x
  2. Step 2: Convert to fraction form
    26,945.80/40,418.70 = 21,308.20/x
  3. Step 3: Cross multiply
    26,945.80x = 40,418.70 × 21,308.20
  4. Step 4: Simplify right side
    26,945.80x = 861,249,743.34
  5. Step 5: Solve for x
    x = 861,249,743.34/26,945.80
  6. Step 6: Final answer
    x = 31,962.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.