Home / 20,298.99-28,015.67-12,339.68

Finding the Fourth Proportional to 20,298.99, 28,015.67 and 12,339.68

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Solution

The fourth proportional to 20,298.99, 28,015.67 and 12,339.68 is: 17,030.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.99 : 28,015.67 = 12,339.68 : x
  2. Step 2: Convert to fraction form
    20,298.99/28,015.67 = 12,339.68/x
  3. Step 3: Cross multiply
    20,298.99x = 28,015.67 × 12,339.68
  4. Step 4: Simplify right side
    20,298.99x = 345,704,201.01
  5. Step 5: Solve for x
    x = 345,704,201.01/20,298.99
  6. Step 6: Final answer
    x = 17,030.61

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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.