Home / 11,165.19-15,407.89-6,129.28

Finding the Fourth Proportional to 11,165.19, 15,407.89 and 6,129.28

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Solution

The fourth proportional to 11,165.19, 15,407.89 and 6,129.28 is: 8,458.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.19 : 15,407.89 = 6,129.28 : x
  2. Step 2: Convert to fraction form
    11,165.19/15,407.89 = 6,129.28/x
  3. Step 3: Cross multiply
    11,165.19x = 15,407.89 × 6,129.28
  4. Step 4: Simplify right side
    11,165.19x = 94,439,272.02
  5. Step 5: Solve for x
    x = 94,439,272.02/11,165.19
  6. Step 6: Final answer
    x = 8,458.37

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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.