Home / 20,405.52-30,628.94-14,143.95

Finding the Fourth Proportional to 20,405.52, 30,628.94 and 14,143.95

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Solution

The fourth proportional to 20,405.52, 30,628.94 and 14,143.95 is: 21,230.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.52 : 30,628.94 = 14,143.95 : x
  2. Step 2: Convert to fraction form
    20,405.52/30,628.94 = 14,143.95/x
  3. Step 3: Cross multiply
    20,405.52x = 30,628.94 × 14,143.95
  4. Step 4: Simplify right side
    20,405.52x = 433,214,125.19
  5. Step 5: Solve for x
    x = 433,214,125.19/20,405.52
  6. Step 6: Final answer
    x = 21,230.24

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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.