Home / 13,216.94-18,239.94-7,910.72

Finding the Fourth Proportional to 13,216.94, 18,239.94 and 7,910.72

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Solution

The fourth proportional to 13,216.94, 18,239.94 and 7,910.72 is: 10,917.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.94 : 18,239.94 = 7,910.72 : x
  2. Step 2: Convert to fraction form
    13,216.94/18,239.94 = 7,910.72/x
  3. Step 3: Cross multiply
    13,216.94x = 18,239.94 × 7,910.72
  4. Step 4: Simplify right side
    13,216.94x = 144,291,058.16
  5. Step 5: Solve for x
    x = 144,291,058.16/13,216.94
  6. Step 6: Final answer
    x = 10,917.13

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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.