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Finding the Fourth Proportional to 20,726.80, 31,053.60 and 20,041.60

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Solution

The fourth proportional to 20,726.80, 31,053.60 and 20,041.60 is: 30,027.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.80 : 31,053.60 = 20,041.60 : x
  2. Step 2: Convert to fraction form
    20,726.80/31,053.60 = 20,041.60/x
  3. Step 3: Cross multiply
    20,726.80x = 31,053.60 × 20,041.60
  4. Step 4: Simplify right side
    20,726.80x = 622,363,829.76
  5. Step 5: Solve for x
    x = 622,363,829.76/20,726.80
  6. Step 6: Final answer
    x = 30,027.01

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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.