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Finding the Fourth Proportional to 30,970.93, 46,454.63 and 8,479.97

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Solution

The fourth proportional to 30,970.93, 46,454.63 and 8,479.97 is: 12,719.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,970.93 : 46,454.63 = 8,479.97 : x
  2. Step 2: Convert to fraction form
    30,970.93/46,454.63 = 8,479.97/x
  3. Step 3: Cross multiply
    30,970.93x = 46,454.63 × 8,479.97
  4. Step 4: Simplify right side
    30,970.93x = 393,933,685.34
  5. Step 5: Solve for x
    x = 393,933,685.34/30,970.93
  6. Step 6: Final answer
    x = 12,719.46

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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.