Home / 19,680.21-29,510.60-8,582.09

Finding the Fourth Proportional to 19,680.21, 29,510.60 and 8,582.09

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Solution

The fourth proportional to 19,680.21, 29,510.60 and 8,582.09 is: 12,868.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.21 : 29,510.60 = 8,582.09 : x
  2. Step 2: Convert to fraction form
    19,680.21/29,510.60 = 8,582.09/x
  3. Step 3: Cross multiply
    19,680.21x = 29,510.60 × 8,582.09
  4. Step 4: Simplify right side
    19,680.21x = 253,262,434.69
  5. Step 5: Solve for x
    x = 253,262,434.69/19,680.21
  6. Step 6: Final answer
    x = 12,868.89

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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.