Home / 15,821.16-21,817.38-12,283.08

Finding the Fourth Proportional to 15,821.16, 21,817.38 and 12,283.08

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Solution

The fourth proportional to 15,821.16, 21,817.38 and 12,283.08 is: 16,938.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.16 : 21,817.38 = 12,283.08 : x
  2. Step 2: Convert to fraction form
    15,821.16/21,817.38 = 12,283.08/x
  3. Step 3: Cross multiply
    15,821.16x = 21,817.38 × 12,283.08
  4. Step 4: Simplify right side
    15,821.16x = 267,984,623.93
  5. Step 5: Solve for x
    x = 267,984,623.93/15,821.16
  6. Step 6: Final answer
    x = 16,938.37

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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.