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Finding the Fourth Proportional to 28,159.53, 42,233.06 and 8,435.49

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Solution

The fourth proportional to 28,159.53, 42,233.06 and 8,435.49 is: 12,651.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159.53 : 42,233.06 = 8,435.49 : x
  2. Step 2: Convert to fraction form
    28,159.53/42,233.06 = 8,435.49/x
  3. Step 3: Cross multiply
    28,159.53x = 42,233.06 × 8,435.49
  4. Step 4: Simplify right side
    28,159.53x = 356,256,513.12
  5. Step 5: Solve for x
    x = 356,256,513.12/28,159.53
  6. Step 6: Final answer
    x = 12,651.37

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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.