Home / 12,429.11-17,134.07-9,771.91

Finding the Fourth Proportional to 12,429.11, 17,134.07 and 9,771.91

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Solution

The fourth proportional to 12,429.11, 17,134.07 and 9,771.91 is: 13,470.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.11 : 17,134.07 = 9,771.91 : x
  2. Step 2: Convert to fraction form
    12,429.11/17,134.07 = 9,771.91/x
  3. Step 3: Cross multiply
    12,429.11x = 17,134.07 × 9,771.91
  4. Step 4: Simplify right side
    12,429.11x = 167,432,498.28
  5. Step 5: Solve for x
    x = 167,432,498.28/12,429.11
  6. Step 6: Final answer
    x = 13,470.99

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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.