Home / 11,126.40-16,688.52-2,918.40

Finding the Fourth Proportional to 11,126.40, 16,688.52 and 2,918.40

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Solution

The fourth proportional to 11,126.40, 16,688.52 and 2,918.40 is: 4,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,126.40 : 16,688.52 = 2,918.40 : x
  2. Step 2: Convert to fraction form
    11,126.40/16,688.52 = 2,918.40/x
  3. Step 3: Cross multiply
    11,126.40x = 16,688.52 × 2,918.40
  4. Step 4: Simplify right side
    11,126.40x = 48,703,776.77
  5. Step 5: Solve for x
    x = 48,703,776.77/11,126.40
  6. Step 6: Final answer
    x = 4,377.32

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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.