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Finding the Fourth Proportional to 29,551.98, 40,781.72 and 18,941.60

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Solution

The fourth proportional to 29,551.98, 40,781.72 and 18,941.60 is: 26,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,551.98 : 40,781.72 = 18,941.60 : x
  2. Step 2: Convert to fraction form
    29,551.98/40,781.72 = 18,941.60/x
  3. Step 3: Cross multiply
    29,551.98x = 40,781.72 × 18,941.60
  4. Step 4: Simplify right side
    29,551.98x = 772,471,027.55
  5. Step 5: Solve for x
    x = 772,471,027.55/29,551.98
  6. Step 6: Final answer
    x = 26,139.40

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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.