Home / 13,920.49-19,210.77-9,951.09

Finding the Fourth Proportional to 13,920.49, 19,210.77 and 9,951.09

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Solution

The fourth proportional to 13,920.49, 19,210.77 and 9,951.09 is: 13,732.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.49 : 19,210.77 = 9,951.09 : x
  2. Step 2: Convert to fraction form
    13,920.49/19,210.77 = 9,951.09/x
  3. Step 3: Cross multiply
    13,920.49x = 19,210.77 × 9,951.09
  4. Step 4: Simplify right side
    13,920.49x = 191,168,029.20
  5. Step 5: Solve for x
    x = 191,168,029.20/13,920.49
  6. Step 6: Final answer
    x = 13,732.85

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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.