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Finding the Fourth Proportional to 14,390.17, 19,860.64 and 8,725.84

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Solution

The fourth proportional to 14,390.17, 19,860.64 and 8,725.84 is: 12,042.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,390.17 : 19,860.64 = 8,725.84 : x
  2. Step 2: Convert to fraction form
    14,390.17/19,860.64 = 8,725.84/x
  3. Step 3: Cross multiply
    14,390.17x = 19,860.64 × 8,725.84
  4. Step 4: Simplify right side
    14,390.17x = 173,300,695.47
  5. Step 5: Solve for x
    x = 173,300,695.47/14,390.17
  6. Step 6: Final answer
    x = 12,042.99

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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.