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Finding the Fourth Proportional to 18,700.68, 25,802.18 and 12,654.03

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Solution

The fourth proportional to 18,700.68, 25,802.18 and 12,654.03 is: 17,459.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,700.68 : 25,802.18 = 12,654.03 : x
  2. Step 2: Convert to fraction form
    18,700.68/25,802.18 = 12,654.03/x
  3. Step 3: Cross multiply
    18,700.68x = 25,802.18 × 12,654.03
  4. Step 4: Simplify right side
    18,700.68x = 326,501,640.73
  5. Step 5: Solve for x
    x = 326,501,640.73/18,700.68
  6. Step 6: Final answer
    x = 17,459.34

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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.