Home / 13,127.81-19,648.58-9,990.88

Finding the Fourth Proportional to 13,127.81, 19,648.58 and 9,990.88

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Solution

The fourth proportional to 13,127.81, 19,648.58 and 9,990.88 is: 14,953.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.81 : 19,648.58 = 9,990.88 : x
  2. Step 2: Convert to fraction form
    13,127.81/19,648.58 = 9,990.88/x
  3. Step 3: Cross multiply
    13,127.81x = 19,648.58 × 9,990.88
  4. Step 4: Simplify right side
    13,127.81x = 196,306,505.87
  5. Step 5: Solve for x
    x = 196,306,505.87/13,127.81
  6. Step 6: Final answer
    x = 14,953.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.