Home / 28,798.26-39,726.45-19,830.21

Finding the Fourth Proportional to 28,798.26, 39,726.45 and 19,830.21

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Solution

The fourth proportional to 28,798.26, 39,726.45 and 19,830.21 is: 27,355.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,798.26 : 39,726.45 = 19,830.21 : x
  2. Step 2: Convert to fraction form
    28,798.26/39,726.45 = 19,830.21/x
  3. Step 3: Cross multiply
    28,798.26x = 39,726.45 × 19,830.21
  4. Step 4: Simplify right side
    28,798.26x = 787,783,846.05
  5. Step 5: Solve for x
    x = 787,783,846.05/28,798.26
  6. Step 6: Final answer
    x = 27,355.26

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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.