Home / 21,287.22-29,327.40-16,809.32

Finding the Fourth Proportional to 21,287.22, 29,327.40 and 16,809.32

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Solution

The fourth proportional to 21,287.22, 29,327.40 and 16,809.32 is: 23,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.22 : 29,327.40 = 16,809.32 : x
  2. Step 2: Convert to fraction form
    21,287.22/29,327.40 = 16,809.32/x
  3. Step 3: Cross multiply
    21,287.22x = 29,327.40 × 16,809.32
  4. Step 4: Simplify right side
    21,287.22x = 492,973,651.37
  5. Step 5: Solve for x
    x = 492,973,651.37/21,287.22
  6. Step 6: Final answer
    x = 23,158.20

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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.