Home / 12,429.56-17,153.02-6,840.44

Finding the Fourth Proportional to 12,429.56, 17,153.02 and 6,840.44

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Solution

The fourth proportional to 12,429.56, 17,153.02 and 6,840.44 is: 9,439.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.56 : 17,153.02 = 6,840.44 : x
  2. Step 2: Convert to fraction form
    12,429.56/17,153.02 = 6,840.44/x
  3. Step 3: Cross multiply
    12,429.56x = 17,153.02 × 6,840.44
  4. Step 4: Simplify right side
    12,429.56x = 117,334,204.13
  5. Step 5: Solve for x
    x = 117,334,204.13/12,429.56
  6. Step 6: Final answer
    x = 9,439.93

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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.