Home / 13,587.57-20,415.38-8,659.53

Finding the Fourth Proportional to 13,587.57, 20,415.38 and 8,659.53

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Solution

The fourth proportional to 13,587.57, 20,415.38 and 8,659.53 is: 13,010.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.57 : 20,415.38 = 8,659.53 : x
  2. Step 2: Convert to fraction form
    13,587.57/20,415.38 = 8,659.53/x
  3. Step 3: Cross multiply
    13,587.57x = 20,415.38 × 8,659.53
  4. Step 4: Simplify right side
    13,587.57x = 176,787,552.27
  5. Step 5: Solve for x
    x = 176,787,552.27/13,587.57
  6. Step 6: Final answer
    x = 13,010.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.