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Finding the Fourth Proportional to 30,555.87, 45,845.43 and 15,755.34

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Solution

The fourth proportional to 30,555.87, 45,845.43 and 15,755.34 is: 23,639.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,555.87 : 45,845.43 = 15,755.34 : x
  2. Step 2: Convert to fraction form
    30,555.87/45,845.43 = 15,755.34/x
  3. Step 3: Cross multiply
    30,555.87x = 45,845.43 × 15,755.34
  4. Step 4: Simplify right side
    30,555.87x = 722,310,337.10
  5. Step 5: Solve for x
    x = 722,310,337.10/30,555.87
  6. Step 6: Final answer
    x = 23,639.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.