Home / 28,745.22-39,682.38-19,190.76

Finding the Fourth Proportional to 28,745.22, 39,682.38 and 19,190.76

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Solution

The fourth proportional to 28,745.22, 39,682.38 and 19,190.76 is: 26,492.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.22 : 39,682.38 = 19,190.76 : x
  2. Step 2: Convert to fraction form
    28,745.22/39,682.38 = 19,190.76/x
  3. Step 3: Cross multiply
    28,745.22x = 39,682.38 × 19,190.76
  4. Step 4: Simplify right side
    28,745.22x = 761,535,030.81
  5. Step 5: Solve for x
    x = 761,535,030.81/28,745.22
  6. Step 6: Final answer
    x = 26,492.58

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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.