Home / 20,880.59-31,301.64-6,831.95

Finding the Fourth Proportional to 20,880.59, 31,301.64 and 6,831.95

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Solution

The fourth proportional to 20,880.59, 31,301.64 and 6,831.95 is: 10,241.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.59 : 31,301.64 = 6,831.95 : x
  2. Step 2: Convert to fraction form
    20,880.59/31,301.64 = 6,831.95/x
  3. Step 3: Cross multiply
    20,880.59x = 31,301.64 × 6,831.95
  4. Step 4: Simplify right side
    20,880.59x = 213,851,082.89
  5. Step 5: Solve for x
    x = 213,851,082.89/20,880.59
  6. Step 6: Final answer
    x = 10,241.62

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1.5x scale

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.