Home / 21,961-30,306.20-12,532.60

Finding the Fourth Proportional to 21,961, 30,306.20 and 12,532.60

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Solution

The fourth proportional to 21,961, 30,306.20 and 12,532.60 is: 17,295.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961 : 30,306.20 = 12,532.60 : x
  2. Step 2: Convert to fraction form
    21,961/30,306.20 = 12,532.60/x
  3. Step 3: Cross multiply
    21,961x = 30,306.20 × 12,532.60
  4. Step 4: Simplify right side
    21,961x = 379,815,482.12
  5. Step 5: Solve for x
    x = 379,815,482.12/21,961
  6. Step 6: Final answer
    x = 17,295.00

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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.