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Finding the Fourth Proportional to 14,291.88, 19,721.70 and 8,003.40

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Solution

The fourth proportional to 14,291.88, 19,721.70 and 8,003.40 is: 11,044.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,291.88 : 19,721.70 = 8,003.40 : x
  2. Step 2: Convert to fraction form
    14,291.88/19,721.70 = 8,003.40/x
  3. Step 3: Cross multiply
    14,291.88x = 19,721.70 × 8,003.40
  4. Step 4: Simplify right side
    14,291.88x = 157,840,653.78
  5. Step 5: Solve for x
    x = 157,840,653.78/14,291.88
  6. Step 6: Final answer
    x = 11,044.08

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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.