Home / 20,946.51-28,903.97-11,993.18

Finding the Fourth Proportional to 20,946.51, 28,903.97 and 11,993.18

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Solution

The fourth proportional to 20,946.51, 28,903.97 and 11,993.18 is: 16,549.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.51 : 28,903.97 = 11,993.18 : x
  2. Step 2: Convert to fraction form
    20,946.51/28,903.97 = 11,993.18/x
  3. Step 3: Cross multiply
    20,946.51x = 28,903.97 × 11,993.18
  4. Step 4: Simplify right side
    20,946.51x = 346,650,400.39
  5. Step 5: Solve for x
    x = 346,650,400.39/20,946.51
  6. Step 6: Final answer
    x = 16,549.32

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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.