Home / 21,878.24-32,813.70-7,085.02

Finding the Fourth Proportional to 21,878.24, 32,813.70 and 7,085.02

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Solution

The fourth proportional to 21,878.24, 32,813.70 and 7,085.02 is: 10,626.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,878.24 : 32,813.70 = 7,085.02 : x
  2. Step 2: Convert to fraction form
    21,878.24/32,813.70 = 7,085.02/x
  3. Step 3: Cross multiply
    21,878.24x = 32,813.70 × 7,085.02
  4. Step 4: Simplify right side
    21,878.24x = 232,485,720.77
  5. Step 5: Solve for x
    x = 232,485,720.77/21,878.24
  6. Step 6: Final answer
    x = 10,626.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.