Home / 12,929.40-19,377.63-5,531.94

Finding the Fourth Proportional to 12,929.40, 19,377.63 and 5,531.94

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Solution

The fourth proportional to 12,929.40, 19,377.63 and 5,531.94 is: 8,290.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.40 : 19,377.63 = 5,531.94 : x
  2. Step 2: Convert to fraction form
    12,929.40/19,377.63 = 5,531.94/x
  3. Step 3: Cross multiply
    12,929.40x = 19,377.63 × 5,531.94
  4. Step 4: Simplify right side
    12,929.40x = 107,195,886.50
  5. Step 5: Solve for x
    x = 107,195,886.50/12,929.40
  6. Step 6: Final answer
    x = 8,290.86

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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.