Home / 21,479.07-29,651.62-19,231.93

Finding the Fourth Proportional to 21,479.07, 29,651.62 and 19,231.93

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Solution

The fourth proportional to 21,479.07, 29,651.62 and 19,231.93 is: 26,549.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.07 : 29,651.62 = 19,231.93 : x
  2. Step 2: Convert to fraction form
    21,479.07/29,651.62 = 19,231.93/x
  3. Step 3: Cross multiply
    21,479.07x = 29,651.62 × 19,231.93
  4. Step 4: Simplify right side
    21,479.07x = 570,257,905.27
  5. Step 5: Solve for x
    x = 570,257,905.27/21,479.07
  6. Step 6: Final answer
    x = 26,549.46

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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.