Home / 11,897.10-16,397.51-7,911.09

Finding the Fourth Proportional to 11,897.10, 16,397.51 and 7,911.09

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Solution

The fourth proportional to 11,897.10, 16,397.51 and 7,911.09 is: 10,903.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897.10 : 16,397.51 = 7,911.09 : x
  2. Step 2: Convert to fraction form
    11,897.10/16,397.51 = 7,911.09/x
  3. Step 3: Cross multiply
    11,897.10x = 16,397.51 × 7,911.09
  4. Step 4: Simplify right side
    11,897.10x = 129,722,137.83
  5. Step 5: Solve for x
    x = 129,722,137.83/11,897.10
  6. Step 6: Final answer
    x = 10,903.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.