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Finding the Fourth Proportional to 30,728.11, 46,110.06 and 12,957.67

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Solution

The fourth proportional to 30,728.11, 46,110.06 and 12,957.67 is: 19,444.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728.11 : 46,110.06 = 12,957.67 : x
  2. Step 2: Convert to fraction form
    30,728.11/46,110.06 = 12,957.67/x
  3. Step 3: Cross multiply
    30,728.11x = 46,110.06 × 12,957.67
  4. Step 4: Simplify right side
    30,728.11x = 597,478,941.16
  5. Step 5: Solve for x
    x = 597,478,941.16/30,728.11
  6. Step 6: Final answer
    x = 19,444.05

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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.