Home / 18,215.47-25,123.93-13,739.41

Finding the Fourth Proportional to 18,215.47, 25,123.93 and 13,739.41

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Solution

The fourth proportional to 18,215.47, 25,123.93 and 13,739.41 is: 18,950.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.47 : 25,123.93 = 13,739.41 : x
  2. Step 2: Convert to fraction form
    18,215.47/25,123.93 = 13,739.41/x
  3. Step 3: Cross multiply
    18,215.47x = 25,123.93 × 13,739.41
  4. Step 4: Simplify right side
    18,215.47x = 345,187,975.08
  5. Step 5: Solve for x
    x = 345,187,975.08/18,215.47
  6. Step 6: Final answer
    x = 18,950.26

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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.