Home / 12,936.02-17,854.54-8,219.40

Finding the Fourth Proportional to 12,936.02, 17,854.54 and 8,219.40

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Solution

The fourth proportional to 12,936.02, 17,854.54 and 8,219.40 is: 11,344.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.02 : 17,854.54 = 8,219.40 : x
  2. Step 2: Convert to fraction form
    12,936.02/17,854.54 = 8,219.40/x
  3. Step 3: Cross multiply
    12,936.02x = 17,854.54 × 8,219.40
  4. Step 4: Simplify right side
    12,936.02x = 146,753,606.08
  5. Step 5: Solve for x
    x = 146,753,606.08/12,936.02
  6. Step 6: Final answer
    x = 11,344.57

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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.