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Finding the Fourth Proportional to 29,146.64, 43,720.41 and 9,155.48

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Solution

The fourth proportional to 29,146.64, 43,720.41 and 9,155.48 is: 13,733.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,146.64 : 43,720.41 = 9,155.48 : x
  2. Step 2: Convert to fraction form
    29,146.64/43,720.41 = 9,155.48/x
  3. Step 3: Cross multiply
    29,146.64x = 43,720.41 × 9,155.48
  4. Step 4: Simplify right side
    29,146.64x = 400,281,349.51
  5. Step 5: Solve for x
    x = 400,281,349.51/29,146.64
  6. Step 6: Final answer
    x = 13,733.36

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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.