Home / 25,639.16-38,392.86-21,243.56

Finding the Fourth Proportional to 25,639.16, 38,392.86 and 21,243.56

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Solution

The fourth proportional to 25,639.16, 38,392.86 and 21,243.56 is: 31,810.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,639.16 : 38,392.86 = 21,243.56 : x
  2. Step 2: Convert to fraction form
    25,639.16/38,392.86 = 21,243.56/x
  3. Step 3: Cross multiply
    25,639.16x = 38,392.86 × 21,243.56
  4. Step 4: Simplify right side
    25,639.16x = 815,601,024.98
  5. Step 5: Solve for x
    x = 815,601,024.98/25,639.16
  6. Step 6: Final answer
    x = 31,810.75

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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.