Home / 11,463.86-15,820.14-6,428.09

Finding the Fourth Proportional to 11,463.86, 15,820.14 and 6,428.09

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Solution

The fourth proportional to 11,463.86, 15,820.14 and 6,428.09 is: 8,870.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,463.86 : 15,820.14 = 6,428.09 : x
  2. Step 2: Convert to fraction form
    11,463.86/15,820.14 = 6,428.09/x
  3. Step 3: Cross multiply
    11,463.86x = 15,820.14 × 6,428.09
  4. Step 4: Simplify right side
    11,463.86x = 101,693,347.39
  5. Step 5: Solve for x
    x = 101,693,347.39/11,463.86
  6. Step 6: Final answer
    x = 8,870.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.