Home / 13,587.75-20,381.63-4,353.75

Finding the Fourth Proportional to 13,587.75, 20,381.63 and 4,353.75

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Solution

The fourth proportional to 13,587.75, 20,381.63 and 4,353.75 is: 6,530.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.75 : 20,381.63 = 4,353.75 : x
  2. Step 2: Convert to fraction form
    13,587.75/20,381.63 = 4,353.75/x
  3. Step 3: Cross multiply
    13,587.75x = 20,381.63 × 4,353.75
  4. Step 4: Simplify right side
    13,587.75x = 88,736,499.84
  5. Step 5: Solve for x
    x = 88,736,499.84/13,587.75
  6. Step 6: Final answer
    x = 6,530.63

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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.