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Finding the Fourth Proportional to 14,347.80, 19,795.68 and 8,684.64

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Solution

The fourth proportional to 14,347.80, 19,795.68 and 8,684.64 is: 11,982.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,347.80 : 19,795.68 = 8,684.64 : x
  2. Step 2: Convert to fraction form
    14,347.80/19,795.68 = 8,684.64/x
  3. Step 3: Cross multiply
    14,347.80x = 19,795.68 × 8,684.64
  4. Step 4: Simplify right side
    14,347.80x = 171,918,354.36
  5. Step 5: Solve for x
    x = 171,918,354.36/14,347.80
  6. Step 6: Final answer
    x = 11,982.21

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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.