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Finding the Fourth Proportional to 14,125.20, 19,491 and 7,837.20

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Solution

The fourth proportional to 14,125.20, 19,491 and 7,837.20 is: 10,814.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,125.20 : 19,491 = 7,837.20 : x
  2. Step 2: Convert to fraction form
    14,125.20/19,491 = 7,837.20/x
  3. Step 3: Cross multiply
    14,125.20x = 19,491 × 7,837.20
  4. Step 4: Simplify right side
    14,125.20x = 152,754,865.20
  5. Step 5: Solve for x
    x = 152,754,865.20/14,125.20
  6. Step 6: Final answer
    x = 10,814.35

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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.