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Finding the Fourth Proportional to 30,679.73, 46,019.64 and 8,493.17

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Solution

The fourth proportional to 30,679.73, 46,019.64 and 8,493.17 is: 12,739.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,679.73 : 46,019.64 = 8,493.17 : x
  2. Step 2: Convert to fraction form
    30,679.73/46,019.64 = 8,493.17/x
  3. Step 3: Cross multiply
    30,679.73x = 46,019.64 × 8,493.17
  4. Step 4: Simplify right side
    30,679.73x = 390,852,686.47
  5. Step 5: Solve for x
    x = 390,852,686.47/30,679.73
  6. Step 6: Final answer
    x = 12,739.77

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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.