Home / 21,399.66-29,539.74-19,157.58

Finding the Fourth Proportional to 21,399.66, 29,539.74 and 19,157.58

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Solution

The fourth proportional to 21,399.66, 29,539.74 and 19,157.58 is: 26,444.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.66 : 29,539.74 = 19,157.58 : x
  2. Step 2: Convert to fraction form
    21,399.66/29,539.74 = 19,157.58/x
  3. Step 3: Cross multiply
    21,399.66x = 29,539.74 × 19,157.58
  4. Step 4: Simplify right side
    21,399.66x = 565,909,932.23
  5. Step 5: Solve for x
    x = 565,909,932.23/21,399.66
  6. Step 6: Final answer
    x = 26,444.81

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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.