Home / 21,968.80-30,316.96-11,897.32

Finding the Fourth Proportional to 21,968.80, 30,316.96 and 11,897.32

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Solution

The fourth proportional to 21,968.80, 30,316.96 and 11,897.32 is: 16,418.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.80 : 30,316.96 = 11,897.32 : x
  2. Step 2: Convert to fraction form
    21,968.80/30,316.96 = 11,897.32/x
  3. Step 3: Cross multiply
    21,968.80x = 30,316.96 × 11,897.32
  4. Step 4: Simplify right side
    21,968.80x = 360,690,574.55
  5. Step 5: Solve for x
    x = 360,690,574.55/21,968.80
  6. Step 6: Final answer
    x = 16,418.31

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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.