Home / 21,117.39-29,153.57-14,413.02

Finding the Fourth Proportional to 21,117.39, 29,153.57 and 14,413.02

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Solution

The fourth proportional to 21,117.39, 29,153.57 and 14,413.02 is: 19,897.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.39 : 29,153.57 = 14,413.02 : x
  2. Step 2: Convert to fraction form
    21,117.39/29,153.57 = 14,413.02/x
  3. Step 3: Cross multiply
    21,117.39x = 29,153.57 × 14,413.02
  4. Step 4: Simplify right side
    21,117.39x = 420,190,915.42
  5. Step 5: Solve for x
    x = 420,190,915.42/21,117.39
  6. Step 6: Final answer
    x = 19,897.86

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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.