Home / 14,289.20-19,718.88-8,001.80

Finding the Fourth Proportional to 14,289.20, 19,718.88 and 8,001.80

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Solution

The fourth proportional to 14,289.20, 19,718.88 and 8,001.80 is: 11,042.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.20 : 19,718.88 = 8,001.80 : x
  2. Step 2: Convert to fraction form
    14,289.20/19,718.88 = 8,001.80/x
  3. Step 3: Cross multiply
    14,289.20x = 19,718.88 × 8,001.80
  4. Step 4: Simplify right side
    14,289.20x = 157,786,533.98
  5. Step 5: Solve for x
    x = 157,786,533.98/14,289.20
  6. Step 6: Final answer
    x = 11,042.36

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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.