Home / 15,500.10-21,393.09-9,215.94

Finding the Fourth Proportional to 15,500.10, 21,393.09 and 9,215.94

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Solution

The fourth proportional to 15,500.10, 21,393.09 and 9,215.94 is: 12,719.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.10 : 21,393.09 = 9,215.94 : x
  2. Step 2: Convert to fraction form
    15,500.10/21,393.09 = 9,215.94/x
  3. Step 3: Cross multiply
    15,500.10x = 21,393.09 × 9,215.94
  4. Step 4: Simplify right side
    15,500.10x = 197,157,433.85
  5. Step 5: Solve for x
    x = 197,157,433.85/15,500.10
  6. Step 6: Final answer
    x = 12,719.75

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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.