Home / 16,390.25-22,620.49-9,317.74

Finding the Fourth Proportional to 16,390.25, 22,620.49 and 9,317.74

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Solution

The fourth proportional to 16,390.25, 22,620.49 and 9,317.74 is: 12,859.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.25 : 22,620.49 = 9,317.74 : x
  2. Step 2: Convert to fraction form
    16,390.25/22,620.49 = 9,317.74/x
  3. Step 3: Cross multiply
    16,390.25x = 22,620.49 × 9,317.74
  4. Step 4: Simplify right side
    16,390.25x = 210,771,844.49
  5. Step 5: Solve for x
    x = 210,771,844.49/16,390.25
  6. Step 6: Final answer
    x = 12,859.59

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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.