Home / 12,979.03-17,912.47-7,946.64

Finding the Fourth Proportional to 12,979.03, 17,912.47 and 7,946.64

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Solution

The fourth proportional to 12,979.03, 17,912.47 and 7,946.64 is: 10,967.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.03 : 17,912.47 = 7,946.64 : x
  2. Step 2: Convert to fraction form
    12,979.03/17,912.47 = 7,946.64/x
  3. Step 3: Cross multiply
    12,979.03x = 17,912.47 × 7,946.64
  4. Step 4: Simplify right side
    12,979.03x = 142,343,950.60
  5. Step 5: Solve for x
    x = 142,343,950.60/12,979.03
  6. Step 6: Final answer
    x = 10,967.23

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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.