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Finding the Fourth Proportional to 30,985.97, 46,470.65 and 13,451.63

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Solution

The fourth proportional to 30,985.97, 46,470.65 and 13,451.63 is: 20,173.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.97 : 46,470.65 = 13,451.63 : x
  2. Step 2: Convert to fraction form
    30,985.97/46,470.65 = 13,451.63/x
  3. Step 3: Cross multiply
    30,985.97x = 46,470.65 × 13,451.63
  4. Step 4: Simplify right side
    30,985.97x = 625,105,690.05
  5. Step 5: Solve for x
    x = 625,105,690.05/30,985.97
  6. Step 6: Final answer
    x = 20,173.83

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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.