Home / 11,911.32-17,868.36-4,521.30

Finding the Fourth Proportional to 11,911.32, 17,868.36 and 4,521.30

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Solution

The fourth proportional to 11,911.32, 17,868.36 and 4,521.30 is: 6,782.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.32 : 17,868.36 = 4,521.30 : x
  2. Step 2: Convert to fraction form
    11,911.32/17,868.36 = 4,521.30/x
  3. Step 3: Cross multiply
    11,911.32x = 17,868.36 × 4,521.30
  4. Step 4: Simplify right side
    11,911.32x = 80,788,216.07
  5. Step 5: Solve for x
    x = 80,788,216.07/11,911.32
  6. Step 6: Final answer
    x = 6,782.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.