Home / 19,680.71-29,511.35-8,582.59

Finding the Fourth Proportional to 19,680.71, 29,511.35 and 8,582.59

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Solution

The fourth proportional to 19,680.71, 29,511.35 and 8,582.59 is: 12,869.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.71 : 29,511.35 = 8,582.59 : x
  2. Step 2: Convert to fraction form
    19,680.71/29,511.35 = 8,582.59/x
  3. Step 3: Cross multiply
    19,680.71x = 29,511.35 × 8,582.59
  4. Step 4: Simplify right side
    19,680.71x = 253,283,626.93
  5. Step 5: Solve for x
    x = 253,283,626.93/19,680.71
  6. Step 6: Final answer
    x = 12,869.64

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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.