Home / 13,980.13-20,942.50-9,053.23

Finding the Fourth Proportional to 13,980.13, 20,942.50 and 9,053.23

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Solution

The fourth proportional to 13,980.13, 20,942.50 and 9,053.23 is: 13,561.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.13 : 20,942.50 = 9,053.23 : x
  2. Step 2: Convert to fraction form
    13,980.13/20,942.50 = 9,053.23/x
  3. Step 3: Cross multiply
    13,980.13x = 20,942.50 × 9,053.23
  4. Step 4: Simplify right side
    13,980.13x = 189,597,269.28
  5. Step 5: Solve for x
    x = 189,597,269.28/13,980.13
  6. Step 6: Final answer
    x = 13,561.91

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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.