Home / 13,931.94-20,891.76-6,530.42

Finding the Fourth Proportional to 13,931.94, 20,891.76 and 6,530.42

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Solution

The fourth proportional to 13,931.94, 20,891.76 and 6,530.42 is: 9,792.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.94 : 20,891.76 = 6,530.42 : x
  2. Step 2: Convert to fraction form
    13,931.94/20,891.76 = 6,530.42/x
  3. Step 3: Cross multiply
    13,931.94x = 20,891.76 × 6,530.42
  4. Step 4: Simplify right side
    13,931.94x = 136,431,967.34
  5. Step 5: Solve for x
    x = 136,431,967.34/13,931.94
  6. Step 6: Final answer
    x = 9,792.75

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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.