Home / 23,090.40-31,862.99-15,118.79

Finding the Fourth Proportional to 23,090.40, 31,862.99 and 15,118.79

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Solution

The fourth proportional to 23,090.40, 31,862.99 and 15,118.79 is: 20,862.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,090.40 : 31,862.99 = 15,118.79 : x
  2. Step 2: Convert to fraction form
    23,090.40/31,862.99 = 15,118.79/x
  3. Step 3: Cross multiply
    23,090.40x = 31,862.99 × 15,118.79
  4. Step 4: Simplify right side
    23,090.40x = 481,729,733.06
  5. Step 5: Solve for x
    x = 481,729,733.06/23,090.40
  6. Step 6: Final answer
    x = 20,862.77

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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.