Home / 20,498.65-28,289.58-11,424.59

Finding the Fourth Proportional to 20,498.65, 28,289.58 and 11,424.59

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Solution

The fourth proportional to 20,498.65, 28,289.58 and 11,424.59 is: 15,766.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.65 : 28,289.58 = 11,424.59 : x
  2. Step 2: Convert to fraction form
    20,498.65/28,289.58 = 11,424.59/x
  3. Step 3: Cross multiply
    20,498.65x = 28,289.58 × 11,424.59
  4. Step 4: Simplify right side
    20,498.65x = 323,196,711.32
  5. Step 5: Solve for x
    x = 323,196,711.32/20,498.65
  6. Step 6: Final answer
    x = 15,766.73

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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.