Home / 18,521.56-25,559.76-10,138.24

Finding the Fourth Proportional to 18,521.56, 25,559.76 and 10,138.24

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Solution

The fourth proportional to 18,521.56, 25,559.76 and 10,138.24 is: 13,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.56 : 25,559.76 = 10,138.24 : x
  2. Step 2: Convert to fraction form
    18,521.56/25,559.76 = 10,138.24/x
  3. Step 3: Cross multiply
    18,521.56x = 25,559.76 × 10,138.24
  4. Step 4: Simplify right side
    18,521.56x = 259,130,981.22
  5. Step 5: Solve for x
    x = 259,130,981.22/18,521.56
  6. Step 6: Final answer
    x = 13,990.78

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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.