Home / 20,183.60-30,275.40-10,342.10

Finding the Fourth Proportional to 20,183.60, 30,275.40 and 10,342.10

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Solution

The fourth proportional to 20,183.60, 30,275.40 and 10,342.10 is: 15,513.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.60 : 30,275.40 = 10,342.10 : x
  2. Step 2: Convert to fraction form
    20,183.60/30,275.40 = 10,342.10/x
  3. Step 3: Cross multiply
    20,183.60x = 30,275.40 × 10,342.10
  4. Step 4: Simplify right side
    20,183.60x = 313,111,214.34
  5. Step 5: Solve for x
    x = 313,111,214.34/20,183.60
  6. Step 6: Final answer
    x = 15,513.15

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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.