Home / 20,501.20-28,230.60-19,012.69

Finding the Fourth Proportional to 20,501.20, 28,230.60 and 19,012.69

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Solution

The fourth proportional to 20,501.20, 28,230.60 and 19,012.69 is: 26,180.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.20 : 28,230.60 = 19,012.69 : x
  2. Step 2: Convert to fraction form
    20,501.20/28,230.60 = 19,012.69/x
  3. Step 3: Cross multiply
    20,501.20x = 28,230.60 × 19,012.69
  4. Step 4: Simplify right side
    20,501.20x = 536,739,646.31
  5. Step 5: Solve for x
    x = 536,739,646.31/20,501.20
  6. Step 6: Final answer
    x = 26,180.89

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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.