Home / 11,139.36-16,702.56-4,214.40

Finding the Fourth Proportional to 11,139.36, 16,702.56 and 4,214.40

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Solution

The fourth proportional to 11,139.36, 16,702.56 and 4,214.40 is: 6,319.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.36 : 16,702.56 = 4,214.40 : x
  2. Step 2: Convert to fraction form
    11,139.36/16,702.56 = 4,214.40/x
  3. Step 3: Cross multiply
    11,139.36x = 16,702.56 × 4,214.40
  4. Step 4: Simplify right side
    11,139.36x = 70,391,268.86
  5. Step 5: Solve for x
    x = 70,391,268.86/11,139.36
  6. Step 6: Final answer
    x = 6,319.15

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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.