Home / 20,880.64-31,301.52-14,309.92

Finding the Fourth Proportional to 20,880.64, 31,301.52 and 14,309.92

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Solution

The fourth proportional to 20,880.64, 31,301.52 and 14,309.92 is: 21,451.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.64 : 31,301.52 = 14,309.92 : x
  2. Step 2: Convert to fraction form
    20,880.64/31,301.52 = 14,309.92/x
  3. Step 3: Cross multiply
    20,880.64x = 31,301.52 × 14,309.92
  4. Step 4: Simplify right side
    20,880.64x = 447,922,247.08
  5. Step 5: Solve for x
    x = 447,922,247.08/20,880.64
  6. Step 6: Final answer
    x = 21,451.56

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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.