Home / 12,971.07-17,898.86-7,664.87

Finding the Fourth Proportional to 12,971.07, 17,898.86 and 7,664.87

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Solution

The fourth proportional to 12,971.07, 17,898.86 and 7,664.87 is: 10,576.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,971.07 : 17,898.86 = 7,664.87 : x
  2. Step 2: Convert to fraction form
    12,971.07/17,898.86 = 7,664.87/x
  3. Step 3: Cross multiply
    12,971.07x = 17,898.86 × 7,664.87
  4. Step 4: Simplify right side
    12,971.07x = 137,192,498.96
  5. Step 5: Solve for x
    x = 137,192,498.96/12,971.07
  6. Step 6: Final answer
    x = 10,576.81

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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.