Home / 13,087.28-18,055.50-8,363.36

Finding the Fourth Proportional to 13,087.28, 18,055.50 and 8,363.36

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Solution

The fourth proportional to 13,087.28, 18,055.50 and 8,363.36 is: 11,538.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.28 : 18,055.50 = 8,363.36 : x
  2. Step 2: Convert to fraction form
    13,087.28/18,055.50 = 8,363.36/x
  3. Step 3: Cross multiply
    13,087.28x = 18,055.50 × 8,363.36
  4. Step 4: Simplify right side
    13,087.28x = 151,004,646.48
  5. Step 5: Solve for x
    x = 151,004,646.48/13,087.28
  6. Step 6: Final answer
    x = 11,538.28

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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.