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Finding the Fourth Proportional to 29,019.78, 40,051.77 and 16,278.12

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Solution

The fourth proportional to 29,019.78, 40,051.77 and 16,278.12 is: 22,466.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,019.78 : 40,051.77 = 16,278.12 : x
  2. Step 2: Convert to fraction form
    29,019.78/40,051.77 = 16,278.12/x
  3. Step 3: Cross multiply
    29,019.78x = 40,051.77 × 16,278.12
  4. Step 4: Simplify right side
    29,019.78x = 651,967,518.27
  5. Step 5: Solve for x
    x = 651,967,518.27/29,019.78
  6. Step 6: Final answer
    x = 22,466.31

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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.