Home / 13,346.20-18,415.02-8,039.80

Finding the Fourth Proportional to 13,346.20, 18,415.02 and 8,039.80

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Solution

The fourth proportional to 13,346.20, 18,415.02 and 8,039.80 is: 11,093.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,346.20 : 18,415.02 = 8,039.80 : x
  2. Step 2: Convert to fraction form
    13,346.20/18,415.02 = 8,039.80/x
  3. Step 3: Cross multiply
    13,346.20x = 18,415.02 × 8,039.80
  4. Step 4: Simplify right side
    13,346.20x = 148,053,077.80
  5. Step 5: Solve for x
    x = 148,053,077.80/13,346.20
  6. Step 6: Final answer
    x = 11,093.28

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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.