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Finding the Fourth Proportional to 12,360.80, 17,058.60 and 7,056.72

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Solution

The fourth proportional to 12,360.80, 17,058.60 and 7,056.72 is: 9,738.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,360.80 : 17,058.60 = 7,056.72 : x
  2. Step 2: Convert to fraction form
    12,360.80/17,058.60 = 7,056.72/x
  3. Step 3: Cross multiply
    12,360.80x = 17,058.60 × 7,056.72
  4. Step 4: Simplify right side
    12,360.80x = 120,377,763.79
  5. Step 5: Solve for x
    x = 120,377,763.79/12,360.80
  6. Step 6: Final answer
    x = 9,738.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.