Home / 13,065.64-18,021.29-9,231.10

Finding the Fourth Proportional to 13,065.64, 18,021.29 and 9,231.10

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Solution

The fourth proportional to 13,065.64, 18,021.29 and 9,231.10 is: 12,732.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.64 : 18,021.29 = 9,231.10 : x
  2. Step 2: Convert to fraction form
    13,065.64/18,021.29 = 9,231.10/x
  3. Step 3: Cross multiply
    13,065.64x = 18,021.29 × 9,231.10
  4. Step 4: Simplify right side
    13,065.64x = 166,356,238.91
  5. Step 5: Solve for x
    x = 166,356,238.91/13,065.64
  6. Step 6: Final answer
    x = 12,732.35

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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.