Home / 13,503.18-18,647.26-12,766.88

Finding the Fourth Proportional to 13,503.18, 18,647.26 and 12,766.88

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Solution

The fourth proportional to 13,503.18, 18,647.26 and 12,766.88 is: 17,630.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.18 : 18,647.26 = 12,766.88 : x
  2. Step 2: Convert to fraction form
    13,503.18/18,647.26 = 12,766.88/x
  3. Step 3: Cross multiply
    13,503.18x = 18,647.26 × 12,766.88
  4. Step 4: Simplify right side
    13,503.18x = 238,067,330.75
  5. Step 5: Solve for x
    x = 238,067,330.75/13,503.18
  6. Step 6: Final answer
    x = 17,630.46

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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.