Home / 12,897.75-19,355.27-4,689.75

Finding the Fourth Proportional to 12,897.75, 19,355.27 and 4,689.75

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Solution

The fourth proportional to 12,897.75, 19,355.27 and 4,689.75 is: 7,037.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.75 : 19,355.27 = 4,689.75 : x
  2. Step 2: Convert to fraction form
    12,897.75/19,355.27 = 4,689.75/x
  3. Step 3: Cross multiply
    12,897.75x = 19,355.27 × 4,689.75
  4. Step 4: Simplify right side
    12,897.75x = 90,771,377.48
  5. Step 5: Solve for x
    x = 90,771,377.48/12,897.75
  6. Step 6: Final answer
    x = 7,037.77

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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.