Home / 11,521.27-15,899.38-6,485.57

Finding the Fourth Proportional to 11,521.27, 15,899.38 and 6,485.57

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Solution

The fourth proportional to 11,521.27, 15,899.38 and 6,485.57 is: 8,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,521.27 : 15,899.38 = 6,485.57 : x
  2. Step 2: Convert to fraction form
    11,521.27/15,899.38 = 6,485.57/x
  3. Step 3: Cross multiply
    11,521.27x = 15,899.38 × 6,485.57
  4. Step 4: Simplify right side
    11,521.27x = 103,116,462.45
  5. Step 5: Solve for x
    x = 103,116,462.45/11,521.27
  6. Step 6: Final answer
    x = 8,950.10

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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.