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Finding the Fourth Proportional to 35,988.64, 53,989.10 and 12,294.88

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Solution

The fourth proportional to 35,988.64, 53,989.10 and 12,294.88 is: 18,444.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,988.64 : 53,989.10 = 12,294.88 : x
  2. Step 2: Convert to fraction form
    35,988.64/53,989.10 = 12,294.88/x
  3. Step 3: Cross multiply
    35,988.64x = 53,989.10 × 12,294.88
  4. Step 4: Simplify right side
    35,988.64x = 663,789,401.57
  5. Step 5: Solve for x
    x = 663,789,401.57/35,988.64
  6. Step 6: Final answer
    x = 18,444.42

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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.