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Finding the Fourth Proportional to 14,131.80, 19,495.08 and 8,465.04

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Solution

The fourth proportional to 14,131.80, 19,495.08 and 8,465.04 is: 11,677.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,131.80 : 19,495.08 = 8,465.04 : x
  2. Step 2: Convert to fraction form
    14,131.80/19,495.08 = 8,465.04/x
  3. Step 3: Cross multiply
    14,131.80x = 19,495.08 × 8,465.04
  4. Step 4: Simplify right side
    14,131.80x = 165,026,632.00
  5. Step 5: Solve for x
    x = 165,026,632.00/14,131.80
  6. Step 6: Final answer
    x = 11,677.68

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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.