Home / 13,531.96-18,658.90-8,745.60

Finding the Fourth Proportional to 13,531.96, 18,658.90 and 8,745.60

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Solution

The fourth proportional to 13,531.96, 18,658.90 and 8,745.60 is: 12,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.96 : 18,658.90 = 8,745.60 : x
  2. Step 2: Convert to fraction form
    13,531.96/18,658.90 = 8,745.60/x
  3. Step 3: Cross multiply
    13,531.96x = 18,658.90 × 8,745.60
  4. Step 4: Simplify right side
    13,531.96x = 163,183,275.84
  5. Step 5: Solve for x
    x = 163,183,275.84/13,531.96
  6. Step 6: Final answer
    x = 12,059.10

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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.