Home / 13,788.64-19,026.66-7,820.02

Finding the Fourth Proportional to 13,788.64, 19,026.66 and 7,820.02

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Solution

The fourth proportional to 13,788.64, 19,026.66 and 7,820.02 is: 10,790.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.64 : 19,026.66 = 7,820.02 : x
  2. Step 2: Convert to fraction form
    13,788.64/19,026.66 = 7,820.02/x
  3. Step 3: Cross multiply
    13,788.64x = 19,026.66 × 7,820.02
  4. Step 4: Simplify right side
    13,788.64x = 148,788,861.73
  5. Step 5: Solve for x
    x = 148,788,861.73/13,788.64
  6. Step 6: Final answer
    x = 10,790.68

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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.