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Finding the Fourth Proportional to 21,300.84, 29,366.52 and 14,918.84

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Solution

The fourth proportional to 21,300.84, 29,366.52 and 14,918.84 is: 20,567.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.84 : 29,366.52 = 14,918.84 : x
  2. Step 2: Convert to fraction form
    21,300.84/29,366.52 = 14,918.84/x
  3. Step 3: Cross multiply
    21,300.84x = 29,366.52 × 14,918.84
  4. Step 4: Simplify right side
    21,300.84x = 438,114,413.24
  5. Step 5: Solve for x
    x = 438,114,413.24/21,300.84
  6. Step 6: Final answer
    x = 20,567.94

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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.