Home / 11,519.78-15,897.09-6,483.99

Finding the Fourth Proportional to 11,519.78, 15,897.09 and 6,483.99

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Solution

The fourth proportional to 11,519.78, 15,897.09 and 6,483.99 is: 8,947.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,519.78 : 15,897.09 = 6,483.99 : x
  2. Step 2: Convert to fraction form
    11,519.78/15,897.09 = 6,483.99/x
  3. Step 3: Cross multiply
    11,519.78x = 15,897.09 × 6,483.99
  4. Step 4: Simplify right side
    11,519.78x = 103,076,572.59
  5. Step 5: Solve for x
    x = 103,076,572.59/11,519.78
  6. Step 6: Final answer
    x = 8,947.79

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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.