Home / 20,582.72-30,878.37-11,702.14

Finding the Fourth Proportional to 20,582.72, 30,878.37 and 11,702.14

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Solution

The fourth proportional to 20,582.72, 30,878.37 and 11,702.14 is: 17,555.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.72 : 30,878.37 = 11,702.14 : x
  2. Step 2: Convert to fraction form
    20,582.72/30,878.37 = 11,702.14/x
  3. Step 3: Cross multiply
    20,582.72x = 30,878.37 × 11,702.14
  4. Step 4: Simplify right side
    20,582.72x = 361,343,008.71
  5. Step 5: Solve for x
    x = 361,343,008.71/20,582.72
  6. Step 6: Final answer
    x = 17,555.65

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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.