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Finding the Fourth Proportional to 35,412.85, 53,119.28 and 12,039.29

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Solution

The fourth proportional to 35,412.85, 53,119.28 and 12,039.29 is: 18,058.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,412.85 : 53,119.28 = 12,039.29 : x
  2. Step 2: Convert to fraction form
    35,412.85/53,119.28 = 12,039.29/x
  3. Step 3: Cross multiply
    35,412.85x = 53,119.28 × 12,039.29
  4. Step 4: Simplify right side
    35,412.85x = 639,518,380.21
  5. Step 5: Solve for x
    x = 639,518,380.21/35,412.85
  6. Step 6: Final answer
    x = 18,058.94

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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.