Home / 11,139.49-15,374.90-6,664.24

Finding the Fourth Proportional to 11,139.49, 15,374.90 and 6,664.24

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Solution

The fourth proportional to 11,139.49, 15,374.90 and 6,664.24 is: 9,198.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.49 : 15,374.90 = 6,664.24 : x
  2. Step 2: Convert to fraction form
    11,139.49/15,374.90 = 6,664.24/x
  3. Step 3: Cross multiply
    11,139.49x = 15,374.90 × 6,664.24
  4. Step 4: Simplify right side
    11,139.49x = 102,461,913.38
  5. Step 5: Solve for x
    x = 102,461,913.38/11,139.49
  6. Step 6: Final answer
    x = 9,198.08

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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.