Home / 10,128.96-13,977.60-5,877.36

Finding the Fourth Proportional to 10,128.96, 13,977.60 and 5,877.36

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Solution

The fourth proportional to 10,128.96, 13,977.60 and 5,877.36 is: 8,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.96 : 13,977.60 = 5,877.36 : x
  2. Step 2: Convert to fraction form
    10,128.96/13,977.60 = 5,877.36/x
  3. Step 3: Cross multiply
    10,128.96x = 13,977.60 × 5,877.36
  4. Step 4: Simplify right side
    10,128.96x = 82,151,387.14
  5. Step 5: Solve for x
    x = 82,151,387.14/10,128.96
  6. Step 6: Final answer
    x = 8,110.55

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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.