Home / 10,429.86-15,649.81-6,480.05

Finding the Fourth Proportional to 10,429.86, 15,649.81 and 6,480.05

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Solution

The fourth proportional to 10,429.86, 15,649.81 and 6,480.05 is: 9,723.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.86 : 15,649.81 = 6,480.05 : x
  2. Step 2: Convert to fraction form
    10,429.86/15,649.81 = 6,480.05/x
  3. Step 3: Cross multiply
    10,429.86x = 15,649.81 × 6,480.05
  4. Step 4: Simplify right side
    10,429.86x = 101,411,544.87
  5. Step 5: Solve for x
    x = 101,411,544.87/10,429.86
  6. Step 6: Final answer
    x = 9,723.19

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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.