Home / 12,138.46-16,700.98-9,481.26

Finding the Fourth Proportional to 12,138.46, 16,700.98 and 9,481.26

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Solution

The fourth proportional to 12,138.46, 16,700.98 and 9,481.26 is: 13,045.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.46 : 16,700.98 = 9,481.26 : x
  2. Step 2: Convert to fraction form
    12,138.46/16,700.98 = 9,481.26/x
  3. Step 3: Cross multiply
    12,138.46x = 16,700.98 × 9,481.26
  4. Step 4: Simplify right side
    12,138.46x = 158,346,333.63
  5. Step 5: Solve for x
    x = 158,346,333.63/12,138.46
  6. Step 6: Final answer
    x = 13,045.01

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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.