Home / 13,188.91-18,203.97-8,947.07

Finding the Fourth Proportional to 13,188.91, 18,203.97 and 8,947.07

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Solution

The fourth proportional to 13,188.91, 18,203.97 and 8,947.07 is: 12,349.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.91 : 18,203.97 = 8,947.07 : x
  2. Step 2: Convert to fraction form
    13,188.91/18,203.97 = 8,947.07/x
  3. Step 3: Cross multiply
    13,188.91x = 18,203.97 × 8,947.07
  4. Step 4: Simplify right side
    13,188.91x = 162,872,193.87
  5. Step 5: Solve for x
    x = 162,872,193.87/13,188.91
  6. Step 6: Final answer
    x = 12,349.18

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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.