Home / 13,720.61-18,933.46-8,055.59

Finding the Fourth Proportional to 13,720.61, 18,933.46 and 8,055.59

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Solution

The fourth proportional to 13,720.61, 18,933.46 and 8,055.59 is: 11,116.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.61 : 18,933.46 = 8,055.59 : x
  2. Step 2: Convert to fraction form
    13,720.61/18,933.46 = 8,055.59/x
  3. Step 3: Cross multiply
    13,720.61x = 18,933.46 × 8,055.59
  4. Step 4: Simplify right side
    13,720.61x = 152,520,228.05
  5. Step 5: Solve for x
    x = 152,520,228.05/13,720.61
  6. Step 6: Final answer
    x = 11,116.14

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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.