Home / 20,278.96-30,400.81-9,743.69

Finding the Fourth Proportional to 20,278.96, 30,400.81 and 9,743.69

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Solution

The fourth proportional to 20,278.96, 30,400.81 and 9,743.69 is: 14,607.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.96 : 30,400.81 = 9,743.69 : x
  2. Step 2: Convert to fraction form
    20,278.96/30,400.81 = 9,743.69/x
  3. Step 3: Cross multiply
    20,278.96x = 30,400.81 × 9,743.69
  4. Step 4: Simplify right side
    20,278.96x = 296,216,068.39
  5. Step 5: Solve for x
    x = 296,216,068.39/20,278.96
  6. Step 6: Final answer
    x = 14,607.06

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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.