Home / 13,272.40-18,312.60-8,551

Finding the Fourth Proportional to 13,272.40, 18,312.60 and 8,551

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Solution

The fourth proportional to 13,272.40, 18,312.60 and 8,551 is: 11,798.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.40 : 18,312.60 = 8,551 : x
  2. Step 2: Convert to fraction form
    13,272.40/18,312.60 = 8,551/x
  3. Step 3: Cross multiply
    13,272.40x = 18,312.60 × 8,551
  4. Step 4: Simplify right side
    13,272.40x = 156,591,042.60
  5. Step 5: Solve for x
    x = 156,591,042.60/13,272.40
  6. Step 6: Final answer
    x = 11,798.25

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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.