Home / 20,336.68-28,069.30-13,250.76

Finding the Fourth Proportional to 20,336.68, 28,069.30 and 13,250.76

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Solution

The fourth proportional to 20,336.68, 28,069.30 and 13,250.76 is: 18,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.68 : 28,069.30 = 13,250.76 : x
  2. Step 2: Convert to fraction form
    20,336.68/28,069.30 = 13,250.76/x
  3. Step 3: Cross multiply
    20,336.68x = 28,069.30 × 13,250.76
  4. Step 4: Simplify right side
    20,336.68x = 371,939,557.67
  5. Step 5: Solve for x
    x = 371,939,557.67/20,336.68
  6. Step 6: Final answer
    x = 18,289.10

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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.