Home / 25,384.07-38,080.43-12,739.86

Finding the Fourth Proportional to 25,384.07, 38,080.43 and 12,739.86

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Solution

The fourth proportional to 25,384.07, 38,080.43 and 12,739.86 is: 19,111.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,384.07 : 38,080.43 = 12,739.86 : x
  2. Step 2: Convert to fraction form
    25,384.07/38,080.43 = 12,739.86/x
  3. Step 3: Cross multiply
    25,384.07x = 38,080.43 × 12,739.86
  4. Step 4: Simplify right side
    25,384.07x = 485,139,223.91
  5. Step 5: Solve for x
    x = 485,139,223.91/25,384.07
  6. Step 6: Final answer
    x = 19,111.95

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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.