Home / 11,167.20-15,410.21-6,688.35

Finding the Fourth Proportional to 11,167.20, 15,410.21 and 6,688.35

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Solution

The fourth proportional to 11,167.20, 15,410.21 and 6,688.35 is: 9,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,167.20 : 15,410.21 = 6,688.35 : x
  2. Step 2: Convert to fraction form
    11,167.20/15,410.21 = 6,688.35/x
  3. Step 3: Cross multiply
    11,167.20x = 15,410.21 × 6,688.35
  4. Step 4: Simplify right side
    11,167.20x = 103,068,844.61
  5. Step 5: Solve for x
    x = 103,068,844.61/11,167.20
  6. Step 6: Final answer
    x = 9,229.60

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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.