Home / 12,939.34-19,400.02-6,601.91

Finding the Fourth Proportional to 12,939.34, 19,400.02 and 6,601.91

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Solution

The fourth proportional to 12,939.34, 19,400.02 and 6,601.91 is: 9,898.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.34 : 19,400.02 = 6,601.91 : x
  2. Step 2: Convert to fraction form
    12,939.34/19,400.02 = 6,601.91/x
  3. Step 3: Cross multiply
    12,939.34x = 19,400.02 × 6,601.91
  4. Step 4: Simplify right side
    12,939.34x = 128,077,218.03
  5. Step 5: Solve for x
    x = 128,077,218.03/12,939.34
  6. Step 6: Final answer
    x = 9,898.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.