Home / 29,431.76-40,611.38-18,103.10

Finding the Fourth Proportional to 29,431.76, 40,611.38 and 18,103.10

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Solution

The fourth proportional to 29,431.76, 40,611.38 and 18,103.10 is: 24,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,431.76 : 40,611.38 = 18,103.10 : x
  2. Step 2: Convert to fraction form
    29,431.76/40,611.38 = 18,103.10/x
  3. Step 3: Cross multiply
    29,431.76x = 40,611.38 × 18,103.10
  4. Step 4: Simplify right side
    29,431.76x = 735,191,579.71
  5. Step 5: Solve for x
    x = 735,191,579.71/29,431.76
  6. Step 6: Final answer
    x = 24,979.54

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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.