Home / 20,934.28-31,274.87-13,477.96

Finding the Fourth Proportional to 20,934.28, 31,274.87 and 13,477.96

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Solution

The fourth proportional to 20,934.28, 31,274.87 and 13,477.96 is: 20,135.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.28 : 31,274.87 = 13,477.96 : x
  2. Step 2: Convert to fraction form
    20,934.28/31,274.87 = 13,477.96/x
  3. Step 3: Cross multiply
    20,934.28x = 31,274.87 × 13,477.96
  4. Step 4: Simplify right side
    20,934.28x = 421,521,446.87
  5. Step 5: Solve for x
    x = 421,521,446.87/20,934.28
  6. Step 6: Final answer
    x = 20,135.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.