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Finding the Fourth Proportional to 18,254.58, 25,186.17 and 12,213.70

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Solution

The fourth proportional to 18,254.58, 25,186.17 and 12,213.70 is: 16,851.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,254.58 : 25,186.17 = 12,213.70 : x
  2. Step 2: Convert to fraction form
    18,254.58/25,186.17 = 12,213.70/x
  3. Step 3: Cross multiply
    18,254.58x = 25,186.17 × 12,213.70
  4. Step 4: Simplify right side
    18,254.58x = 307,616,307.36
  5. Step 5: Solve for x
    x = 307,616,307.36/18,254.58
  6. Step 6: Final answer
    x = 16,851.46

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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.