Home / 13,551.16-20,319.31-4,188.64

Finding the Fourth Proportional to 13,551.16, 20,319.31 and 4,188.64

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Solution

The fourth proportional to 13,551.16, 20,319.31 and 4,188.64 is: 6,280.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.16 : 20,319.31 = 4,188.64 : x
  2. Step 2: Convert to fraction form
    13,551.16/20,319.31 = 4,188.64/x
  3. Step 3: Cross multiply
    13,551.16x = 20,319.31 × 4,188.64
  4. Step 4: Simplify right side
    13,551.16x = 85,110,274.64
  5. Step 5: Solve for x
    x = 85,110,274.64/13,551.16
  6. Step 6: Final answer
    x = 6,280.66

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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.