Home / 12,429.71-17,153.21-6,764.57

Finding the Fourth Proportional to 12,429.71, 17,153.21 and 6,764.57

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Solution

The fourth proportional to 12,429.71, 17,153.21 and 6,764.57 is: 9,335.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.71 : 17,153.21 = 6,764.57 : x
  2. Step 2: Convert to fraction form
    12,429.71/17,153.21 = 6,764.57/x
  3. Step 3: Cross multiply
    12,429.71x = 17,153.21 × 6,764.57
  4. Step 4: Simplify right side
    12,429.71x = 116,034,089.77
  5. Step 5: Solve for x
    x = 116,034,089.77/12,429.71
  6. Step 6: Final answer
    x = 9,335.22

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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.