Home / 20,389.77-30,574.27-7,913.37

Finding the Fourth Proportional to 20,389.77, 30,574.27 and 7,913.37

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Solution

The fourth proportional to 20,389.77, 30,574.27 and 7,913.37 is: 11,866.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389.77 : 30,574.27 = 7,913.37 : x
  2. Step 2: Convert to fraction form
    20,389.77/30,574.27 = 7,913.37/x
  3. Step 3: Cross multiply
    20,389.77x = 30,574.27 × 7,913.37
  4. Step 4: Simplify right side
    20,389.77x = 241,945,510.99
  5. Step 5: Solve for x
    x = 241,945,510.99/20,389.77
  6. Step 6: Final answer
    x = 11,866.02

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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.