Home / 14,285.20-19,713.36-7,997.80

Finding the Fourth Proportional to 14,285.20, 19,713.36 and 7,997.80

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Solution

The fourth proportional to 14,285.20, 19,713.36 and 7,997.80 is: 11,036.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.20 : 19,713.36 = 7,997.80 : x
  2. Step 2: Convert to fraction form
    14,285.20/19,713.36 = 7,997.80/x
  3. Step 3: Cross multiply
    14,285.20x = 19,713.36 × 7,997.80
  4. Step 4: Simplify right side
    14,285.20x = 157,663,510.61
  5. Step 5: Solve for x
    x = 157,663,510.61/14,285.20
  6. Step 6: Final answer
    x = 11,036.84

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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.