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Finding the Fourth Proportional to 39,482.78, 54,483.94 and 21,577.94

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Solution

The fourth proportional to 39,482.78, 54,483.94 and 21,577.94 is: 29,776.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,482.78 : 54,483.94 = 21,577.94 : x
  2. Step 2: Convert to fraction form
    39,482.78/54,483.94 = 21,577.94/x
  3. Step 3: Cross multiply
    39,482.78x = 54,483.94 × 21,577.94
  4. Step 4: Simplify right side
    39,482.78x = 1,175,651,188.28
  5. Step 5: Solve for x
    x = 1,175,651,188.28/39,482.78
  6. Step 6: Final answer
    x = 29,776.30

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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.