Home / 10,921.86-16,382.81-4,681.38

Finding the Fourth Proportional to 10,921.86, 16,382.81 and 4,681.38

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Solution

The fourth proportional to 10,921.86, 16,382.81 and 4,681.38 is: 7,022.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.86 : 16,382.81 = 4,681.38 : x
  2. Step 2: Convert to fraction form
    10,921.86/16,382.81 = 4,681.38/x
  3. Step 3: Cross multiply
    10,921.86x = 16,382.81 × 4,681.38
  4. Step 4: Simplify right side
    10,921.86x = 76,694,159.08
  5. Step 5: Solve for x
    x = 76,694,159.08/10,921.86
  6. Step 6: Final answer
    x = 7,022.08

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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.