Home / 15,815.09-21,826.99-9,100.58

Finding the Fourth Proportional to 15,815.09, 21,826.99 and 9,100.58

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Solution

The fourth proportional to 15,815.09, 21,826.99 and 9,100.58 is: 12,560.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.09 : 21,826.99 = 9,100.58 : x
  2. Step 2: Convert to fraction form
    15,815.09/21,826.99 = 9,100.58/x
  3. Step 3: Cross multiply
    15,815.09x = 21,826.99 × 9,100.58
  4. Step 4: Simplify right side
    15,815.09x = 198,638,136.77
  5. Step 5: Solve for x
    x = 198,638,136.77/15,815.09
  6. Step 6: Final answer
    x = 12,560.04

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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.