Home / 12,897.20-19,389.54-10,297.91

Finding the Fourth Proportional to 12,897.20, 19,389.54 and 10,297.91

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Solution

The fourth proportional to 12,897.20, 19,389.54 and 10,297.91 is: 15,481.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.20 : 19,389.54 = 10,297.91 : x
  2. Step 2: Convert to fraction form
    12,897.20/19,389.54 = 10,297.91/x
  3. Step 3: Cross multiply
    12,897.20x = 19,389.54 × 10,297.91
  4. Step 4: Simplify right side
    12,897.20x = 199,671,737.86
  5. Step 5: Solve for x
    x = 199,671,737.86/12,897.20
  6. Step 6: Final answer
    x = 15,481.79

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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.