Home / 12,429.10-18,668.34-7,441.12

Finding the Fourth Proportional to 12,429.10, 18,668.34 and 7,441.12

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Solution

The fourth proportional to 12,429.10, 18,668.34 and 7,441.12 is: 11,176.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.10 : 18,668.34 = 7,441.12 : x
  2. Step 2: Convert to fraction form
    12,429.10/18,668.34 = 7,441.12/x
  3. Step 3: Cross multiply
    12,429.10x = 18,668.34 × 7,441.12
  4. Step 4: Simplify right side
    12,429.10x = 138,913,358.14
  5. Step 5: Solve for x
    x = 138,913,358.14/12,429.10
  6. Step 6: Final answer
    x = 11,176.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.