Home / 15,886.12-21,922.23-8,812.42

Finding the Fourth Proportional to 15,886.12, 21,922.23 and 8,812.42

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Solution

The fourth proportional to 15,886.12, 21,922.23 and 8,812.42 is: 12,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,886.12 : 21,922.23 = 8,812.42 : x
  2. Step 2: Convert to fraction form
    15,886.12/21,922.23 = 8,812.42/x
  3. Step 3: Cross multiply
    15,886.12x = 21,922.23 × 8,812.42
  4. Step 4: Simplify right side
    15,886.12x = 193,187,898.10
  5. Step 5: Solve for x
    x = 193,187,898.10/15,886.12
  6. Step 6: Final answer
    x = 12,160.80

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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.