Home / 11,129.04-16,688.28-4,106.76

Finding the Fourth Proportional to 11,129.04, 16,688.28 and 4,106.76

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Solution

The fourth proportional to 11,129.04, 16,688.28 and 4,106.76 is: 6,158.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.04 : 16,688.28 = 4,106.76 : x
  2. Step 2: Convert to fraction form
    11,129.04/16,688.28 = 4,106.76/x
  3. Step 3: Cross multiply
    11,129.04x = 16,688.28 × 4,106.76
  4. Step 4: Simplify right side
    11,129.04x = 68,534,760.77
  5. Step 5: Solve for x
    x = 68,534,760.77/11,129.04
  6. Step 6: Final answer
    x = 6,158.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.