Home / 10,854.90-14,979.32-6,139.26

Finding the Fourth Proportional to 10,854.90, 14,979.32 and 6,139.26

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Solution

The fourth proportional to 10,854.90, 14,979.32 and 6,139.26 is: 8,471.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,854.90 : 14,979.32 = 6,139.26 : x
  2. Step 2: Convert to fraction form
    10,854.90/14,979.32 = 6,139.26/x
  3. Step 3: Cross multiply
    10,854.90x = 14,979.32 × 6,139.26
  4. Step 4: Simplify right side
    10,854.90x = 91,961,940.10
  5. Step 5: Solve for x
    x = 91,961,940.10/10,854.90
  6. Step 6: Final answer
    x = 8,471.93

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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.