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Finding the Fourth Proportional to 13,719.48, 20,582.08 and 7,799.09

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Solution

The fourth proportional to 13,719.48, 20,582.08 and 7,799.09 is: 11,700.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.48 : 20,582.08 = 7,799.09 : x
  2. Step 2: Convert to fraction form
    13,719.48/20,582.08 = 7,799.09/x
  3. Step 3: Cross multiply
    13,719.48x = 20,582.08 × 7,799.09
  4. Step 4: Simplify right side
    13,719.48x = 160,521,415.77
  5. Step 5: Solve for x
    x = 160,521,415.77/13,719.48
  6. Step 6: Final answer
    x = 11,700.26

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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.