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Finding the Fourth Proportional to 18,818.24, 26,003 and 13,503.72

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Solution

The fourth proportional to 18,818.24, 26,003 and 13,503.72 is: 18,659.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.24 : 26,003 = 13,503.72 : x
  2. Step 2: Convert to fraction form
    18,818.24/26,003 = 13,503.72/x
  3. Step 3: Cross multiply
    18,818.24x = 26,003 × 13,503.72
  4. Step 4: Simplify right side
    18,818.24x = 351,137,231.16
  5. Step 5: Solve for x
    x = 351,137,231.16/18,818.24
  6. Step 6: Final answer
    x = 18,659.41

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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.