Home / 21,317.26-31,977.16-8,838.20

Finding the Fourth Proportional to 21,317.26, 31,977.16 and 8,838.20

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Solution

The fourth proportional to 21,317.26, 31,977.16 and 8,838.20 is: 13,257.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.26 : 31,977.16 = 8,838.20 : x
  2. Step 2: Convert to fraction form
    21,317.26/31,977.16 = 8,838.20/x
  3. Step 3: Cross multiply
    21,317.26x = 31,977.16 × 8,838.20
  4. Step 4: Simplify right side
    21,317.26x = 282,620,535.51
  5. Step 5: Solve for x
    x = 282,620,535.51/21,317.26
  6. Step 6: Final answer
    x = 13,257.83

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1.5x scale

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.