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Finding the Fourth Proportional to 29,178.56, 43,739.64 and 9,443.72

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Solution

The fourth proportional to 29,178.56, 43,739.64 and 9,443.72 is: 14,156.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,178.56 : 43,739.64 = 9,443.72 : x
  2. Step 2: Convert to fraction form
    29,178.56/43,739.64 = 9,443.72/x
  3. Step 3: Cross multiply
    29,178.56x = 43,739.64 × 9,443.72
  4. Step 4: Simplify right side
    29,178.56x = 413,064,913.06
  5. Step 5: Solve for x
    x = 413,064,913.06/29,178.56
  6. Step 6: Final answer
    x = 14,156.45

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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.