Home / 12,929.09-19,393.70-5,137.92

Finding the Fourth Proportional to 12,929.09, 19,393.70 and 5,137.92

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Solution

The fourth proportional to 12,929.09, 19,393.70 and 5,137.92 is: 7,706.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.09 : 19,393.70 = 5,137.92 : x
  2. Step 2: Convert to fraction form
    12,929.09/19,393.70 = 5,137.92/x
  3. Step 3: Cross multiply
    12,929.09x = 19,393.70 × 5,137.92
  4. Step 4: Simplify right side
    12,929.09x = 99,643,253.41
  5. Step 5: Solve for x
    x = 99,643,253.41/12,929.09
  6. Step 6: Final answer
    x = 7,706.91

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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.