Home / 19,459.80-29,211.30-12,072.60

Finding the Fourth Proportional to 19,459.80, 29,211.30 and 12,072.60

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Solution

The fourth proportional to 19,459.80, 29,211.30 and 12,072.60 is: 18,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,459.80 : 29,211.30 = 12,072.60 : x
  2. Step 2: Convert to fraction form
    19,459.80/29,211.30 = 12,072.60/x
  3. Step 3: Cross multiply
    19,459.80x = 29,211.30 × 12,072.60
  4. Step 4: Simplify right side
    19,459.80x = 352,656,340.38
  5. Step 5: Solve for x
    x = 352,656,340.38/19,459.80
  6. Step 6: Final answer
    x = 18,122.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.