Home / 13,330.88-18,389.36-9,291.32

Finding the Fourth Proportional to 13,330.88, 18,389.36 and 9,291.32

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Solution

The fourth proportional to 13,330.88, 18,389.36 and 9,291.32 is: 12,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.88 : 18,389.36 = 9,291.32 : x
  2. Step 2: Convert to fraction form
    13,330.88/18,389.36 = 9,291.32/x
  3. Step 3: Cross multiply
    13,330.88x = 18,389.36 × 9,291.32
  4. Step 4: Simplify right side
    13,330.88x = 170,861,428.36
  5. Step 5: Solve for x
    x = 170,861,428.36/13,330.88
  6. Step 6: Final answer
    x = 12,816.97

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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.