Home / 26,420.22-39,630.57-21,142.11

Finding the Fourth Proportional to 26,420.22, 39,630.57 and 21,142.11

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Solution

The fourth proportional to 26,420.22, 39,630.57 and 21,142.11 is: 31,713.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,420.22 : 39,630.57 = 21,142.11 : x
  2. Step 2: Convert to fraction form
    26,420.22/39,630.57 = 21,142.11/x
  3. Step 3: Cross multiply
    26,420.22x = 39,630.57 × 21,142.11
  4. Step 4: Simplify right side
    26,420.22x = 837,873,870.30
  5. Step 5: Solve for x
    x = 837,873,870.30/26,420.22
  6. Step 6: Final answer
    x = 31,713.36

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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.