Home / 28,321.13-39,083.19-15,574.53

Finding the Fourth Proportional to 28,321.13, 39,083.19 and 15,574.53

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Solution

The fourth proportional to 28,321.13, 39,083.19 and 15,574.53 is: 21,492.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.13 : 39,083.19 = 15,574.53 : x
  2. Step 2: Convert to fraction form
    28,321.13/39,083.19 = 15,574.53/x
  3. Step 3: Cross multiply
    28,321.13x = 39,083.19 × 15,574.53
  4. Step 4: Simplify right side
    28,321.13x = 608,702,315.15
  5. Step 5: Solve for x
    x = 608,702,315.15/28,321.13
  6. Step 6: Final answer
    x = 21,492.87

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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.