Home / 20,302.68-28,015.62-13,934.76

Finding the Fourth Proportional to 20,302.68, 28,015.62 and 13,934.76

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Solution

The fourth proportional to 20,302.68, 28,015.62 and 13,934.76 is: 19,228.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.68 : 28,015.62 = 13,934.76 : x
  2. Step 2: Convert to fraction form
    20,302.68/28,015.62 = 13,934.76/x
  3. Step 3: Cross multiply
    20,302.68x = 28,015.62 × 13,934.76
  4. Step 4: Simplify right side
    20,302.68x = 390,390,940.95
  5. Step 5: Solve for x
    x = 390,390,940.95/20,302.68
  6. Step 6: Final answer
    x = 19,228.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.