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Finding the Fourth Proportional to 30,828.66, 46,250.82 and 8,642.13

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Solution

The fourth proportional to 30,828.66, 46,250.82 and 8,642.13 is: 12,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,828.66 : 46,250.82 = 8,642.13 : x
  2. Step 2: Convert to fraction form
    30,828.66/46,250.82 = 8,642.13/x
  3. Step 3: Cross multiply
    30,828.66x = 46,250.82 × 8,642.13
  4. Step 4: Simplify right side
    30,828.66x = 399,705,599.05
  5. Step 5: Solve for x
    x = 399,705,599.05/30,828.66
  6. Step 6: Final answer
    x = 12,965.39

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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.