Home / 11,712.15-16,160.58-7,938.36

Finding the Fourth Proportional to 11,712.15, 16,160.58 and 7,938.36

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Solution

The fourth proportional to 11,712.15, 16,160.58 and 7,938.36 is: 10,953.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.15 : 16,160.58 = 7,938.36 : x
  2. Step 2: Convert to fraction form
    11,712.15/16,160.58 = 7,938.36/x
  3. Step 3: Cross multiply
    11,712.15x = 16,160.58 × 7,938.36
  4. Step 4: Simplify right side
    11,712.15x = 128,288,501.85
  5. Step 5: Solve for x
    x = 128,288,501.85/11,712.15
  6. Step 6: Final answer
    x = 10,953.45

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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.