Home / 14,971.40-20,658.12-8,682.56

Finding the Fourth Proportional to 14,971.40, 20,658.12 and 8,682.56

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Solution

The fourth proportional to 14,971.40, 20,658.12 and 8,682.56 is: 11,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,971.40 : 20,658.12 = 8,682.56 : x
  2. Step 2: Convert to fraction form
    14,971.40/20,658.12 = 8,682.56/x
  3. Step 3: Cross multiply
    14,971.40x = 20,658.12 × 8,682.56
  4. Step 4: Simplify right side
    14,971.40x = 179,365,366.39
  5. Step 5: Solve for x
    x = 179,365,366.39/14,971.40
  6. Step 6: Final answer
    x = 11,980.53

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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.