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Finding the Fourth Proportional to 30,812.86, 46,215.72 and 8,628.01

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Solution

The fourth proportional to 30,812.86, 46,215.72 and 8,628.01 is: 12,941.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812.86 : 46,215.72 = 8,628.01 : x
  2. Step 2: Convert to fraction form
    30,812.86/46,215.72 = 8,628.01/x
  3. Step 3: Cross multiply
    30,812.86x = 46,215.72 × 8,628.01
  4. Step 4: Simplify right side
    30,812.86x = 398,749,694.32
  5. Step 5: Solve for x
    x = 398,749,694.32/30,812.86
  6. Step 6: Final answer
    x = 12,941.02

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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.