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Finding the Fourth Proportional to 29,448.96, 40,674.96 and 21,478.56

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Solution

The fourth proportional to 29,448.96, 40,674.96 and 21,478.56 is: 29,666.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,448.96 : 40,674.96 = 21,478.56 : x
  2. Step 2: Convert to fraction form
    29,448.96/40,674.96 = 21,478.56/x
  3. Step 3: Cross multiply
    29,448.96x = 40,674.96 × 21,478.56
  4. Step 4: Simplify right side
    29,448.96x = 873,639,568.86
  5. Step 5: Solve for x
    x = 873,639,568.86/29,448.96
  6. Step 6: Final answer
    x = 29,666.23

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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.