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Finding the Fourth Proportional to 30,751.50, 46,123.02 and 12,018.54

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Solution

The fourth proportional to 30,751.50, 46,123.02 and 12,018.54 is: 18,026.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,751.50 : 46,123.02 = 12,018.54 : x
  2. Step 2: Convert to fraction form
    30,751.50/46,123.02 = 12,018.54/x
  3. Step 3: Cross multiply
    30,751.50x = 46,123.02 × 12,018.54
  4. Step 4: Simplify right side
    30,751.50x = 554,331,360.79
  5. Step 5: Solve for x
    x = 554,331,360.79/30,751.50
  6. Step 6: Final answer
    x = 18,026.16

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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.