Home / 20,639.55-30,959.33-19,587.74

Finding the Fourth Proportional to 20,639.55, 30,959.33 and 19,587.74

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Solution

The fourth proportional to 20,639.55, 30,959.33 and 19,587.74 is: 29,381.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.55 : 30,959.33 = 19,587.74 : x
  2. Step 2: Convert to fraction form
    20,639.55/30,959.33 = 19,587.74/x
  3. Step 3: Cross multiply
    20,639.55x = 30,959.33 × 19,587.74
  4. Step 4: Simplify right side
    20,639.55x = 606,423,286.07
  5. Step 5: Solve for x
    x = 606,423,286.07/20,639.55
  6. Step 6: Final answer
    x = 29,381.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.