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Finding the Fourth Proportional to 39,482.70, 54,486.15 and 21,577.71

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Solution

The fourth proportional to 39,482.70, 54,486.15 and 21,577.71 is: 29,777.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,482.70 : 54,486.15 = 21,577.71 : x
  2. Step 2: Convert to fraction form
    39,482.70/54,486.15 = 21,577.71/x
  3. Step 3: Cross multiply
    39,482.70x = 54,486.15 × 21,577.71
  4. Step 4: Simplify right side
    39,482.70x = 1,175,686,343.72
  5. Step 5: Solve for x
    x = 1,175,686,343.72/39,482.70
  6. Step 6: Final answer
    x = 29,777.25

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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.