Home / 9,138.50-13,705.71-4,203.40

Finding the Fourth Proportional to 9,138.50, 13,705.71 and 4,203.40

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Solution

The fourth proportional to 9,138.50, 13,705.71 and 4,203.40 is: 6,304.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.50 : 13,705.71 = 4,203.40 : x
  2. Step 2: Convert to fraction form
    9,138.50/13,705.71 = 4,203.40/x
  3. Step 3: Cross multiply
    9,138.50x = 13,705.71 × 4,203.40
  4. Step 4: Simplify right side
    9,138.50x = 57,610,594.66
  5. Step 5: Solve for x
    x = 57,610,594.66/9,138.50
  6. Step 6: Final answer
    x = 6,304.16

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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.