Home / 12,389.52-17,097.60-6,800.56

Finding the Fourth Proportional to 12,389.52, 17,097.60 and 6,800.56

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Solution

The fourth proportional to 12,389.52, 17,097.60 and 6,800.56 is: 9,384.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.52 : 17,097.60 = 6,800.56 : x
  2. Step 2: Convert to fraction form
    12,389.52/17,097.60 = 6,800.56/x
  3. Step 3: Cross multiply
    12,389.52x = 17,097.60 × 6,800.56
  4. Step 4: Simplify right side
    12,389.52x = 116,273,254.66
  5. Step 5: Solve for x
    x = 116,273,254.66/12,389.52
  6. Step 6: Final answer
    x = 9,384.81

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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.