Home / 13,990.73-20,989.92-4,130.00

Finding the Fourth Proportional to 13,990.73, 20,989.92 and 4,130.00

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Solution

The fourth proportional to 13,990.73, 20,989.92 and 4,130.00 is: 6,196.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.73 : 20,989.92 = 4,130.00 : x
  2. Step 2: Convert to fraction form
    13,990.73/20,989.92 = 4,130.00/x
  3. Step 3: Cross multiply
    13,990.73x = 20,989.92 × 4,130.00
  4. Step 4: Simplify right side
    13,990.73x = 86,688,343.36
  5. Step 5: Solve for x
    x = 86,688,343.36/13,990.73
  6. Step 6: Final answer
    x = 6,196.13

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Why These Related Problems?

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