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Finding the Fourth Proportional to 29,419.81, 40,599.03 and 21,899.77

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Solution

The fourth proportional to 29,419.81, 40,599.03 and 21,899.77 is: 30,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,419.81 : 40,599.03 = 21,899.77 : x
  2. Step 2: Convert to fraction form
    29,419.81/40,599.03 = 21,899.77/x
  3. Step 3: Cross multiply
    29,419.81x = 40,599.03 × 21,899.77
  4. Step 4: Simplify right side
    29,419.81x = 889,109,419.22
  5. Step 5: Solve for x
    x = 889,109,419.22/29,419.81
  6. Step 6: Final answer
    x = 30,221.45

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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.