Home / 14,912.15-20,557.12-10,421.97

Finding the Fourth Proportional to 14,912.15, 20,557.12 and 10,421.97

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Solution

The fourth proportional to 14,912.15, 20,557.12 and 10,421.97 is: 14,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,912.15 : 20,557.12 = 10,421.97 : x
  2. Step 2: Convert to fraction form
    14,912.15/20,557.12 = 10,421.97/x
  3. Step 3: Cross multiply
    14,912.15x = 20,557.12 × 10,421.97
  4. Step 4: Simplify right side
    14,912.15x = 214,245,575.01
  5. Step 5: Solve for x
    x = 214,245,575.01/14,912.15
  6. Step 6: Final answer
    x = 14,367.18

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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.