Home / 16,077.96-22,139.37-13,420.80

Finding the Fourth Proportional to 16,077.96, 22,139.37 and 13,420.80

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Solution

The fourth proportional to 16,077.96, 22,139.37 and 13,420.80 is: 18,480.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,077.96 : 22,139.37 = 13,420.80 : x
  2. Step 2: Convert to fraction form
    16,077.96/22,139.37 = 13,420.80/x
  3. Step 3: Cross multiply
    16,077.96x = 22,139.37 × 13,420.80
  4. Step 4: Simplify right side
    16,077.96x = 297,128,056.90
  5. Step 5: Solve for x
    x = 297,128,056.90/16,077.96
  6. Step 6: Final answer
    x = 18,480.46

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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.