Home / 11,948.99-16,490.25-6,643.76

Finding the Fourth Proportional to 11,948.99, 16,490.25 and 6,643.76

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Solution

The fourth proportional to 11,948.99, 16,490.25 and 6,643.76 is: 9,168.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,948.99 : 16,490.25 = 6,643.76 : x
  2. Step 2: Convert to fraction form
    11,948.99/16,490.25 = 6,643.76/x
  3. Step 3: Cross multiply
    11,948.99x = 16,490.25 × 6,643.76
  4. Step 4: Simplify right side
    11,948.99x = 109,557,180.89
  5. Step 5: Solve for x
    x = 109,557,180.89/11,948.99
  6. Step 6: Final answer
    x = 9,168.74

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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.