Home / 11,710.90-16,165.85-7,939.23

Finding the Fourth Proportional to 11,710.90, 16,165.85 and 7,939.23

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Solution

The fourth proportional to 11,710.90, 16,165.85 and 7,939.23 is: 10,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,710.90 : 16,165.85 = 7,939.23 : x
  2. Step 2: Convert to fraction form
    11,710.90/16,165.85 = 7,939.23/x
  3. Step 3: Cross multiply
    11,710.90x = 16,165.85 × 7,939.23
  4. Step 4: Simplify right side
    11,710.90x = 128,344,401.30
  5. Step 5: Solve for x
    x = 128,344,401.30/11,710.90
  6. Step 6: Final answer
    x = 10,959.40

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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.