Home / 25,389.88-38,090.38-7,619.80

Finding the Fourth Proportional to 25,389.88, 38,090.38 and 7,619.80

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Solution

The fourth proportional to 25,389.88, 38,090.38 and 7,619.80 is: 11,431.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,389.88 : 38,090.38 = 7,619.80 : x
  2. Step 2: Convert to fraction form
    25,389.88/38,090.38 = 7,619.80/x
  3. Step 3: Cross multiply
    25,389.88x = 38,090.38 × 7,619.80
  4. Step 4: Simplify right side
    25,389.88x = 290,241,077.52
  5. Step 5: Solve for x
    x = 290,241,077.52/25,389.88
  6. Step 6: Final answer
    x = 11,431.37

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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.