Home / 21,708.46-29,962.56-12,280.06

Finding the Fourth Proportional to 21,708.46, 29,962.56 and 12,280.06

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Solution

The fourth proportional to 21,708.46, 29,962.56 and 12,280.06 is: 16,949.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.46 : 29,962.56 = 12,280.06 : x
  2. Step 2: Convert to fraction form
    21,708.46/29,962.56 = 12,280.06/x
  3. Step 3: Cross multiply
    21,708.46x = 29,962.56 × 12,280.06
  4. Step 4: Simplify right side
    21,708.46x = 367,942,034.55
  5. Step 5: Solve for x
    x = 367,942,034.55/21,708.46
  6. Step 6: Final answer
    x = 16,949.25

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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.