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Finding the Fourth Proportional to 39,473.64, 54,473.50 and 21,568.79

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Solution

The fourth proportional to 39,473.64, 54,473.50 and 21,568.79 is: 29,764.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,473.64 : 54,473.50 = 21,568.79 : x
  2. Step 2: Convert to fraction form
    39,473.64/54,473.50 = 21,568.79/x
  3. Step 3: Cross multiply
    39,473.64x = 54,473.50 × 21,568.79
  4. Step 4: Simplify right side
    39,473.64x = 1,174,927,482.07
  5. Step 5: Solve for x
    x = 1,174,927,482.07/39,473.64
  6. Step 6: Final answer
    x = 29,764.86

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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.