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Finding the Fourth Proportional to 14,290.75, 19,721.24 and 8,701.75

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Solution

The fourth proportional to 14,290.75, 19,721.24 and 8,701.75 is: 12,008.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.75 : 19,721.24 = 8,701.75 : x
  2. Step 2: Convert to fraction form
    14,290.75/19,721.24 = 8,701.75/x
  3. Step 3: Cross multiply
    14,290.75x = 19,721.24 × 8,701.75
  4. Step 4: Simplify right side
    14,290.75x = 171,609,300.17
  5. Step 5: Solve for x
    x = 171,609,300.17/14,290.75
  6. Step 6: Final answer
    x = 12,008.42

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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.