Home / 15,804.90-21,815.10-9,091.26

Finding the Fourth Proportional to 15,804.90, 21,815.10 and 9,091.26

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Solution

The fourth proportional to 15,804.90, 21,815.10 and 9,091.26 is: 12,548.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.90 : 21,815.10 = 9,091.26 : x
  2. Step 2: Convert to fraction form
    15,804.90/21,815.10 = 9,091.26/x
  3. Step 3: Cross multiply
    15,804.90x = 21,815.10 × 9,091.26
  4. Step 4: Simplify right side
    15,804.90x = 198,326,746.03
  5. Step 5: Solve for x
    x = 198,326,746.03/15,804.90
  6. Step 6: Final answer
    x = 12,548.43

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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.