Home / 35,115.12-52,679.52-12,928.68

Finding the Fourth Proportional to 35,115.12, 52,679.52 and 12,928.68

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Solution

The fourth proportional to 35,115.12, 52,679.52 and 12,928.68 is: 19,395.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,115.12 : 52,679.52 = 12,928.68 : x
  2. Step 2: Convert to fraction form
    35,115.12/52,679.52 = 12,928.68/x
  3. Step 3: Cross multiply
    35,115.12x = 52,679.52 × 12,928.68
  4. Step 4: Simplify right side
    35,115.12x = 681,076,656.63
  5. Step 5: Solve for x
    x = 681,076,656.63/35,115.12
  6. Step 6: Final answer
    x = 19,395.54

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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.