Home / 15,617.39-21,551.49-8,543.34

Finding the Fourth Proportional to 15,617.39, 21,551.49 and 8,543.34

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Solution

The fourth proportional to 15,617.39, 21,551.49 and 8,543.34 is: 11,789.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.39 : 21,551.49 = 8,543.34 : x
  2. Step 2: Convert to fraction form
    15,617.39/21,551.49 = 8,543.34/x
  3. Step 3: Cross multiply
    15,617.39x = 21,551.49 × 8,543.34
  4. Step 4: Simplify right side
    15,617.39x = 184,121,706.58
  5. Step 5: Solve for x
    x = 184,121,706.58/15,617.39
  6. Step 6: Final answer
    x = 11,789.53

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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.