Home / 21,270.70-29,348.52-17,880.58

Finding the Fourth Proportional to 21,270.70, 29,348.52 and 17,880.58

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Solution

The fourth proportional to 21,270.70, 29,348.52 and 17,880.58 is: 24,670.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.70 : 29,348.52 = 17,880.58 : x
  2. Step 2: Convert to fraction form
    21,270.70/29,348.52 = 17,880.58/x
  3. Step 3: Cross multiply
    21,270.70x = 29,348.52 × 17,880.58
  4. Step 4: Simplify right side
    21,270.70x = 524,768,413.00
  5. Step 5: Solve for x
    x = 524,768,413.00/21,270.70
  6. Step 6: Final answer
    x = 24,670.96

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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.