Home / 19,172.30-28,728.54-12,137.46

Finding the Fourth Proportional to 19,172.30, 28,728.54 and 12,137.46

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Solution

The fourth proportional to 19,172.30, 28,728.54 and 12,137.46 is: 18,187.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.30 : 28,728.54 = 12,137.46 : x
  2. Step 2: Convert to fraction form
    19,172.30/28,728.54 = 12,137.46/x
  3. Step 3: Cross multiply
    19,172.30x = 28,728.54 × 12,137.46
  4. Step 4: Simplify right side
    19,172.30x = 348,691,505.11
  5. Step 5: Solve for x
    x = 348,691,505.11/19,172.30
  6. Step 6: Final answer
    x = 18,187.25

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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.