Home / 14,129.60-19,475.36-9,930.56

Finding the Fourth Proportional to 14,129.60, 19,475.36 and 9,930.56

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Solution

The fourth proportional to 14,129.60, 19,475.36 and 9,930.56 is: 13,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,129.60 : 19,475.36 = 9,930.56 : x
  2. Step 2: Convert to fraction form
    14,129.60/19,475.36 = 9,930.56/x
  3. Step 3: Cross multiply
    14,129.60x = 19,475.36 × 9,930.56
  4. Step 4: Simplify right side
    14,129.60x = 193,401,231.00
  5. Step 5: Solve for x
    x = 193,401,231.00/14,129.60
  6. Step 6: Final answer
    x = 13,687.66

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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.