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Finding the Fourth Proportional to 30,687.40, 46,028.40 and 8,498.80

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Solution

The fourth proportional to 30,687.40, 46,028.40 and 8,498.80 is: 12,747.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.40 : 46,028.40 = 8,498.80 : x
  2. Step 2: Convert to fraction form
    30,687.40/46,028.40 = 8,498.80/x
  3. Step 3: Cross multiply
    30,687.40x = 46,028.40 × 8,498.80
  4. Step 4: Simplify right side
    30,687.40x = 391,186,165.92
  5. Step 5: Solve for x
    x = 391,186,165.92/30,687.40
  6. Step 6: Final answer
    x = 12,747.45

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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.