Home / 18,957.13-28,435.70-5,106.13

Finding the Fourth Proportional to 18,957.13, 28,435.70 and 5,106.13

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Solution

The fourth proportional to 18,957.13, 28,435.70 and 5,106.13 is: 7,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.13 : 28,435.70 = 5,106.13 : x
  2. Step 2: Convert to fraction form
    18,957.13/28,435.70 = 5,106.13/x
  3. Step 3: Cross multiply
    18,957.13x = 28,435.70 × 5,106.13
  4. Step 4: Simplify right side
    18,957.13x = 145,196,380.84
  5. Step 5: Solve for x
    x = 145,196,380.84/18,957.13
  6. Step 6: Final answer
    x = 7,659.20

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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.