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Finding the Fourth Proportional to 30,018.59, 45,030.11 and 8,956.97

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Solution

The fourth proportional to 30,018.59, 45,030.11 and 8,956.97 is: 13,436.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,018.59 : 45,030.11 = 8,956.97 : x
  2. Step 2: Convert to fraction form
    30,018.59/45,030.11 = 8,956.97/x
  3. Step 3: Cross multiply
    30,018.59x = 45,030.11 × 8,956.97
  4. Step 4: Simplify right side
    30,018.59x = 403,333,344.37
  5. Step 5: Solve for x
    x = 403,333,344.37/30,018.59
  6. Step 6: Final answer
    x = 13,436.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.