Home / 13,634.40-18,827.40-8,607.60

Finding the Fourth Proportional to 13,634.40, 18,827.40 and 8,607.60

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Solution

The fourth proportional to 13,634.40, 18,827.40 and 8,607.60 is: 11,886.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.40 : 18,827.40 = 8,607.60 : x
  2. Step 2: Convert to fraction form
    13,634.40/18,827.40 = 8,607.60/x
  3. Step 3: Cross multiply
    13,634.40x = 18,827.40 × 8,607.60
  4. Step 4: Simplify right side
    13,634.40x = 162,058,728.24
  5. Step 5: Solve for x
    x = 162,058,728.24/13,634.40
  6. Step 6: Final answer
    x = 11,886.02

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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.