Home / 15,485.68-21,369.44-8,412.08

Finding the Fourth Proportional to 15,485.68, 21,369.44 and 8,412.08

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Solution

The fourth proportional to 15,485.68, 21,369.44 and 8,412.08 is: 11,608.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.68 : 21,369.44 = 8,412.08 : x
  2. Step 2: Convert to fraction form
    15,485.68/21,369.44 = 8,412.08/x
  3. Step 3: Cross multiply
    15,485.68x = 21,369.44 × 8,412.08
  4. Step 4: Simplify right side
    15,485.68x = 179,761,396.77
  5. Step 5: Solve for x
    x = 179,761,396.77/15,485.68
  6. Step 6: Final answer
    x = 11,608.24

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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.