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Finding the Fourth Proportional to 55,420.84, 83,131.26 and 13,867.84

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Solution

The fourth proportional to 55,420.84, 83,131.26 and 13,867.84 is: 20,801.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,420.84 : 83,131.26 = 13,867.84 : x
  2. Step 2: Convert to fraction form
    55,420.84/83,131.26 = 13,867.84/x
  3. Step 3: Cross multiply
    55,420.84x = 83,131.26 × 13,867.84
  4. Step 4: Simplify right side
    55,420.84x = 1,152,851,012.68
  5. Step 5: Solve for x
    x = 1,152,851,012.68/55,420.84
  6. Step 6: Final answer
    x = 20,801.76

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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.