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Finding the Fourth Proportional to 14,391.45, 19,860.54 and 8,018.47

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Solution

The fourth proportional to 14,391.45, 19,860.54 and 8,018.47 is: 11,065.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.45 : 19,860.54 = 8,018.47 : x
  2. Step 2: Convert to fraction form
    14,391.45/19,860.54 = 8,018.47/x
  3. Step 3: Cross multiply
    14,391.45x = 19,860.54 × 8,018.47
  4. Step 4: Simplify right side
    14,391.45x = 159,251,144.17
  5. Step 5: Solve for x
    x = 159,251,144.17/14,391.45
  6. Step 6: Final answer
    x = 11,065.68

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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.