Home / 12,129.45-16,733.70-9,745.43

Finding the Fourth Proportional to 12,129.45, 16,733.70 and 9,745.43

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Solution

The fourth proportional to 12,129.45, 16,733.70 and 9,745.43 is: 13,444.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.45 : 16,733.70 = 9,745.43 : x
  2. Step 2: Convert to fraction form
    12,129.45/16,733.70 = 9,745.43/x
  3. Step 3: Cross multiply
    12,129.45x = 16,733.70 × 9,745.43
  4. Step 4: Simplify right side
    12,129.45x = 163,077,018.32
  5. Step 5: Solve for x
    x = 163,077,018.32/12,129.45
  6. Step 6: Final answer
    x = 13,444.72

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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.