Home / 9,911.04-13,680-6,135.36

Finding the Fourth Proportional to 9,911.04, 13,680 and 6,135.36

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Solution

The fourth proportional to 9,911.04, 13,680 and 6,135.36 is: 8,468.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.04 : 13,680 = 6,135.36 : x
  2. Step 2: Convert to fraction form
    9,911.04/13,680 = 6,135.36/x
  3. Step 3: Cross multiply
    9,911.04x = 13,680 × 6,135.36
  4. Step 4: Simplify right side
    9,911.04x = 83,931,724.80
  5. Step 5: Solve for x
    x = 83,931,724.80/9,911.04
  6. Step 6: Final answer
    x = 8,468.51

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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.