Home / 15,837.70-21,858.10-9,122.26

Finding the Fourth Proportional to 15,837.70, 21,858.10 and 9,122.26

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Solution

The fourth proportional to 15,837.70, 21,858.10 and 9,122.26 is: 12,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,837.70 : 21,858.10 = 9,122.26 : x
  2. Step 2: Convert to fraction form
    15,837.70/21,858.10 = 9,122.26/x
  3. Step 3: Cross multiply
    15,837.70x = 21,858.10 × 9,122.26
  4. Step 4: Simplify right side
    15,837.70x = 199,395,271.31
  5. Step 5: Solve for x
    x = 199,395,271.31/15,837.70
  6. Step 6: Final answer
    x = 12,589.91

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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.