Home / 12,897.05-19,345.77-5,876.78

Finding the Fourth Proportional to 12,897.05, 19,345.77 and 5,876.78

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Solution

The fourth proportional to 12,897.05, 19,345.77 and 5,876.78 is: 8,815.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.05 : 19,345.77 = 5,876.78 : x
  2. Step 2: Convert to fraction form
    12,897.05/19,345.77 = 5,876.78/x
  3. Step 3: Cross multiply
    12,897.05x = 19,345.77 × 5,876.78
  4. Step 4: Simplify right side
    12,897.05x = 113,690,737.49
  5. Step 5: Solve for x
    x = 113,690,737.49/12,897.05
  6. Step 6: Final answer
    x = 8,815.25

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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.