Home / 10,854.86-14,980.68-6,139.04

Finding the Fourth Proportional to 10,854.86, 14,980.68 and 6,139.04

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Solution

The fourth proportional to 10,854.86, 14,980.68 and 6,139.04 is: 8,472.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,854.86 : 14,980.68 = 6,139.04 : x
  2. Step 2: Convert to fraction form
    10,854.86/14,980.68 = 6,139.04/x
  3. Step 3: Cross multiply
    10,854.86x = 14,980.68 × 6,139.04
  4. Step 4: Simplify right side
    10,854.86x = 91,966,918.84
  5. Step 5: Solve for x
    x = 91,966,918.84/10,854.86
  6. Step 6: Final answer
    x = 8,472.42

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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.