Home / 13,289.28-18,338.51-8,253.39

Finding the Fourth Proportional to 13,289.28, 18,338.51 and 8,253.39

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Solution

The fourth proportional to 13,289.28, 18,338.51 and 8,253.39 is: 11,389.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.28 : 18,338.51 = 8,253.39 : x
  2. Step 2: Convert to fraction form
    13,289.28/18,338.51 = 8,253.39/x
  3. Step 3: Cross multiply
    13,289.28x = 18,338.51 × 8,253.39
  4. Step 4: Simplify right side
    13,289.28x = 151,354,833.78
  5. Step 5: Solve for x
    x = 151,354,833.78/13,289.28
  6. Step 6: Final answer
    x = 11,389.24

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Double scale
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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.