Home / 20,332.76-28,033.90-15,558.62

Finding the Fourth Proportional to 20,332.76, 28,033.90 and 15,558.62

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Solution

The fourth proportional to 20,332.76, 28,033.90 and 15,558.62 is: 21,451.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.76 : 28,033.90 = 15,558.62 : x
  2. Step 2: Convert to fraction form
    20,332.76/28,033.90 = 15,558.62/x
  3. Step 3: Cross multiply
    20,332.76x = 28,033.90 × 15,558.62
  4. Step 4: Simplify right side
    20,332.76x = 436,168,618.15
  5. Step 5: Solve for x
    x = 436,168,618.15/20,332.76
  6. Step 6: Final answer
    x = 21,451.53

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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.