Home / 25,409.85-38,079.47-21,020.37

Finding the Fourth Proportional to 25,409.85, 38,079.47 and 21,020.37

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Solution

The fourth proportional to 25,409.85, 38,079.47 and 21,020.37 is: 31,501.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,409.85 : 38,079.47 = 21,020.37 : x
  2. Step 2: Convert to fraction form
    25,409.85/38,079.47 = 21,020.37/x
  3. Step 3: Cross multiply
    25,409.85x = 38,079.47 × 21,020.37
  4. Step 4: Simplify right side
    25,409.85x = 800,444,443.70
  5. Step 5: Solve for x
    x = 800,444,443.70/25,409.85
  6. Step 6: Final answer
    x = 31,501.34

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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.