Home / 9,135.60-13,708.80-6,664.20

Finding the Fourth Proportional to 9,135.60, 13,708.80 and 6,664.20

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Solution

The fourth proportional to 9,135.60, 13,708.80 and 6,664.20 is: 10,000.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.60 : 13,708.80 = 6,664.20 : x
  2. Step 2: Convert to fraction form
    9,135.60/13,708.80 = 6,664.20/x
  3. Step 3: Cross multiply
    9,135.60x = 13,708.80 × 6,664.20
  4. Step 4: Simplify right side
    9,135.60x = 91,358,184.96
  5. Step 5: Solve for x
    x = 91,358,184.96/9,135.60
  6. Step 6: Final answer
    x = 10,000.24

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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.