Home / 12,142.40-16,755.78-6,837.02

Finding the Fourth Proportional to 12,142.40, 16,755.78 and 6,837.02

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Solution

The fourth proportional to 12,142.40, 16,755.78 and 6,837.02 is: 9,434.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.40 : 16,755.78 = 6,837.02 : x
  2. Step 2: Convert to fraction form
    12,142.40/16,755.78 = 6,837.02/x
  3. Step 3: Cross multiply
    12,142.40x = 16,755.78 × 6,837.02
  4. Step 4: Simplify right side
    12,142.40x = 114,559,602.98
  5. Step 5: Solve for x
    x = 114,559,602.98/12,142.40
  6. Step 6: Final answer
    x = 9,434.68

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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.