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Finding the Fourth Proportional to 29,459.64, 40,676.40 and 18,144.72

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Solution

The fourth proportional to 29,459.64, 40,676.40 and 18,144.72 is: 25,053.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,459.64 : 40,676.40 = 18,144.72 : x
  2. Step 2: Convert to fraction form
    29,459.64/40,676.40 = 18,144.72/x
  3. Step 3: Cross multiply
    29,459.64x = 40,676.40 × 18,144.72
  4. Step 4: Simplify right side
    29,459.64x = 738,061,888.61
  5. Step 5: Solve for x
    x = 738,061,888.61/29,459.64
  6. Step 6: Final answer
    x = 25,053.32

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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.