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Finding the Fourth Proportional to 29,615.45, 40,869.02 and 16,187.18

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Solution

The fourth proportional to 29,615.45, 40,869.02 and 16,187.18 is: 22,338.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,615.45 : 40,869.02 = 16,187.18 : x
  2. Step 2: Convert to fraction form
    29,615.45/40,869.02 = 16,187.18/x
  3. Step 3: Cross multiply
    29,615.45x = 40,869.02 × 16,187.18
  4. Step 4: Simplify right side
    29,615.45x = 661,554,019.29
  5. Step 5: Solve for x
    x = 661,554,019.29/29,615.45
  6. Step 6: Final answer
    x = 22,338.14

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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.