Home / 11,129.71-15,359.74-6,414.30

Finding the Fourth Proportional to 11,129.71, 15,359.74 and 6,414.30

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Solution

The fourth proportional to 11,129.71, 15,359.74 and 6,414.30 is: 8,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.71 : 15,359.74 = 6,414.30 : x
  2. Step 2: Convert to fraction form
    11,129.71/15,359.74 = 6,414.30/x
  3. Step 3: Cross multiply
    11,129.71x = 15,359.74 × 6,414.30
  4. Step 4: Simplify right side
    11,129.71x = 98,521,903.48
  5. Step 5: Solve for x
    x = 98,521,903.48/11,129.71
  6. Step 6: Final answer
    x = 8,852.15

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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.