Home / 20,763.99-31,155.12-10,900.98

Finding the Fourth Proportional to 20,763.99, 31,155.12 and 10,900.98

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Solution

The fourth proportional to 20,763.99, 31,155.12 and 10,900.98 is: 16,356.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.99 : 31,155.12 = 10,900.98 : x
  2. Step 2: Convert to fraction form
    20,763.99/31,155.12 = 10,900.98/x
  3. Step 3: Cross multiply
    20,763.99x = 31,155.12 × 10,900.98
  4. Step 4: Simplify right side
    20,763.99x = 339,621,340.02
  5. Step 5: Solve for x
    x = 339,621,340.02/20,763.99
  6. Step 6: Final answer
    x = 16,356.27

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1.5x scale

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.