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Finding the Fourth Proportional to 14,078.81, 19,430.94 and 8,029.06

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Solution

The fourth proportional to 14,078.81, 19,430.94 and 8,029.06 is: 11,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,078.81 : 19,430.94 = 8,029.06 : x
  2. Step 2: Convert to fraction form
    14,078.81/19,430.94 = 8,029.06/x
  3. Step 3: Cross multiply
    14,078.81x = 19,430.94 × 8,029.06
  4. Step 4: Simplify right side
    14,078.81x = 156,012,142.97
  5. Step 5: Solve for x
    x = 156,012,142.97/14,078.81
  6. Step 6: Final answer
    x = 11,081.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.