Home / 28,687.96-39,557.42-18,603.16

Finding the Fourth Proportional to 28,687.96, 39,557.42 and 18,603.16

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Solution

The fourth proportional to 28,687.96, 39,557.42 and 18,603.16 is: 25,651.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,687.96 : 39,557.42 = 18,603.16 : x
  2. Step 2: Convert to fraction form
    28,687.96/39,557.42 = 18,603.16/x
  3. Step 3: Cross multiply
    28,687.96x = 39,557.42 × 18,603.16
  4. Step 4: Simplify right side
    28,687.96x = 735,893,013.45
  5. Step 5: Solve for x
    x = 735,893,013.45/28,687.96
  6. Step 6: Final answer
    x = 25,651.63

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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.