Home / 28,400.49-39,151.71-19,876.23

Finding the Fourth Proportional to 28,400.49, 39,151.71 and 19,876.23

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Solution

The fourth proportional to 28,400.49, 39,151.71 and 19,876.23 is: 27,400.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.49 : 39,151.71 = 19,876.23 : x
  2. Step 2: Convert to fraction form
    28,400.49/39,151.71 = 19,876.23/x
  3. Step 3: Cross multiply
    28,400.49x = 39,151.71 × 19,876.23
  4. Step 4: Simplify right side
    28,400.49x = 778,188,392.85
  5. Step 5: Solve for x
    x = 778,188,392.85/28,400.49
  6. Step 6: Final answer
    x = 27,400.53

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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.