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Finding the Fourth Proportional to 20,468.59, 30,719.30 and 10,610.70

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Solution

The fourth proportional to 20,468.59, 30,719.30 and 10,610.70 is: 15,924.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.59 : 30,719.30 = 10,610.70 : x
  2. Step 2: Convert to fraction form
    20,468.59/30,719.30 = 10,610.70/x
  3. Step 3: Cross multiply
    20,468.59x = 30,719.30 × 10,610.70
  4. Step 4: Simplify right side
    20,468.59x = 325,953,276.51
  5. Step 5: Solve for x
    x = 325,953,276.51/20,468.59
  6. Step 6: Final answer
    x = 15,924.56

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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.