Home / 20,790.20-28,657.68-19,074.08

Finding the Fourth Proportional to 20,790.20, 28,657.68 and 19,074.08

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Solution

The fourth proportional to 20,790.20, 28,657.68 and 19,074.08 is: 26,292.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.20 : 28,657.68 = 19,074.08 : x
  2. Step 2: Convert to fraction form
    20,790.20/28,657.68 = 19,074.08/x
  3. Step 3: Cross multiply
    20,790.20x = 28,657.68 × 19,074.08
  4. Step 4: Simplify right side
    20,790.20x = 546,618,880.93
  5. Step 5: Solve for x
    x = 546,618,880.93/20,790.20
  6. Step 6: Final answer
    x = 26,292.14

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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.