Home / 13,587.37-18,734.56-12,579.73

Finding the Fourth Proportional to 13,587.37, 18,734.56 and 12,579.73

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Solution

The fourth proportional to 13,587.37, 18,734.56 and 12,579.73 is: 17,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.37 : 18,734.56 = 12,579.73 : x
  2. Step 2: Convert to fraction form
    13,587.37/18,734.56 = 12,579.73/x
  3. Step 3: Cross multiply
    13,587.37x = 18,734.56 × 12,579.73
  4. Step 4: Simplify right side
    13,587.37x = 235,675,706.47
  5. Step 5: Solve for x
    x = 235,675,706.47/13,587.37
  6. Step 6: Final answer
    x = 17,345.20

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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.