Home / 12,929.70-19,376.10-7,371.30

Finding the Fourth Proportional to 12,929.70, 19,376.10 and 7,371.30

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Solution

The fourth proportional to 12,929.70, 19,376.10 and 7,371.30 is: 11,046.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.70 : 19,376.10 = 7,371.30 : x
  2. Step 2: Convert to fraction form
    12,929.70/19,376.10 = 7,371.30/x
  3. Step 3: Cross multiply
    12,929.70x = 19,376.10 × 7,371.30
  4. Step 4: Simplify right side
    12,929.70x = 142,827,045.93
  5. Step 5: Solve for x
    x = 142,827,045.93/12,929.70
  6. Step 6: Final answer
    x = 11,046.43

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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.