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Finding the Fourth Proportional to 14,485, 19,989.30 and 8,197.38

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Solution

The fourth proportional to 14,485, 19,989.30 and 8,197.38 is: 11,312.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485 : 19,989.30 = 8,197.38 : x
  2. Step 2: Convert to fraction form
    14,485/19,989.30 = 8,197.38/x
  3. Step 3: Cross multiply
    14,485x = 19,989.30 × 8,197.38
  4. Step 4: Simplify right side
    14,485x = 163,859,888.03
  5. Step 5: Solve for x
    x = 163,859,888.03/14,485
  6. Step 6: Final answer
    x = 11,312.38

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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.