Home / 13,699.45-18,905.25-7,411.81

Finding the Fourth Proportional to 13,699.45, 18,905.25 and 7,411.81

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Solution

The fourth proportional to 13,699.45, 18,905.25 and 7,411.81 is: 10,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.45 : 18,905.25 = 7,411.81 : x
  2. Step 2: Convert to fraction form
    13,699.45/18,905.25 = 7,411.81/x
  3. Step 3: Cross multiply
    13,699.45x = 18,905.25 × 7,411.81
  4. Step 4: Simplify right side
    13,699.45x = 140,122,121.00
  5. Step 5: Solve for x
    x = 140,122,121.00/13,699.45
  6. Step 6: Final answer
    x = 10,228.30

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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.