Home / 21,693.91-29,928.76-14,137.49

Finding the Fourth Proportional to 21,693.91, 29,928.76 and 14,137.49

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Solution

The fourth proportional to 21,693.91, 29,928.76 and 14,137.49 is: 19,503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,693.91 : 29,928.76 = 14,137.49 : x
  2. Step 2: Convert to fraction form
    21,693.91/29,928.76 = 14,137.49/x
  3. Step 3: Cross multiply
    21,693.91x = 29,928.76 × 14,137.49
  4. Step 4: Simplify right side
    21,693.91x = 423,117,413.76
  5. Step 5: Solve for x
    x = 423,117,413.76/21,693.91
  6. Step 6: Final answer
    x = 19,503.97

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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.