Home / 15,910.18-21,957.23-9,861.61

Finding the Fourth Proportional to 15,910.18, 21,957.23 and 9,861.61

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Solution

The fourth proportional to 15,910.18, 21,957.23 and 9,861.61 is: 13,609.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.18 : 21,957.23 = 9,861.61 : x
  2. Step 2: Convert to fraction form
    15,910.18/21,957.23 = 9,861.61/x
  3. Step 3: Cross multiply
    15,910.18x = 21,957.23 × 9,861.61
  4. Step 4: Simplify right side
    15,910.18x = 216,533,638.94
  5. Step 5: Solve for x
    x = 216,533,638.94/15,910.18
  6. Step 6: Final answer
    x = 13,609.75

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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.