Home / 11,173.91-15,420.29-6,138.52

Finding the Fourth Proportional to 11,173.91, 15,420.29 and 6,138.52

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Solution

The fourth proportional to 11,173.91, 15,420.29 and 6,138.52 is: 8,471.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,173.91 : 15,420.29 = 6,138.52 : x
  2. Step 2: Convert to fraction form
    11,173.91/15,420.29 = 6,138.52/x
  3. Step 3: Cross multiply
    11,173.91x = 15,420.29 × 6,138.52
  4. Step 4: Simplify right side
    11,173.91x = 94,657,689.33
  5. Step 5: Solve for x
    x = 94,657,689.33/11,173.91
  6. Step 6: Final answer
    x = 8,471.32

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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.