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Finding the Fourth Proportional to 29,171.88, 43,724.16 and 12,507.12

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Solution

The fourth proportional to 29,171.88, 43,724.16 and 12,507.12 is: 18,746.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,171.88 : 43,724.16 = 12,507.12 : x
  2. Step 2: Convert to fraction form
    29,171.88/43,724.16 = 12,507.12/x
  3. Step 3: Cross multiply
    29,171.88x = 43,724.16 × 12,507.12
  4. Step 4: Simplify right side
    29,171.88x = 546,863,316.02
  5. Step 5: Solve for x
    x = 546,863,316.02/29,171.88
  6. Step 6: Final answer
    x = 18,746.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.