Home / 21,141.27-31,703.40-13,734.63

Finding the Fourth Proportional to 21,141.27, 31,703.40 and 13,734.63

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Solution

The fourth proportional to 21,141.27, 31,703.40 and 13,734.63 is: 20,596.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.27 : 31,703.40 = 13,734.63 : x
  2. Step 2: Convert to fraction form
    21,141.27/31,703.40 = 13,734.63/x
  3. Step 3: Cross multiply
    21,141.27x = 31,703.40 × 13,734.63
  4. Step 4: Simplify right side
    21,141.27x = 435,434,468.74
  5. Step 5: Solve for x
    x = 435,434,468.74/21,141.27
  6. Step 6: Final answer
    x = 20,596.42

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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.