Home / 28,314.56-39,072.48-15,738.56

Finding the Fourth Proportional to 28,314.56, 39,072.48 and 15,738.56

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Solution

The fourth proportional to 28,314.56, 39,072.48 and 15,738.56 is: 21,718.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,314.56 : 39,072.48 = 15,738.56 : x
  2. Step 2: Convert to fraction form
    28,314.56/39,072.48 = 15,738.56/x
  3. Step 3: Cross multiply
    28,314.56x = 39,072.48 × 15,738.56
  4. Step 4: Simplify right side
    28,314.56x = 614,944,570.83
  5. Step 5: Solve for x
    x = 614,944,570.83/28,314.56
  6. Step 6: Final answer
    x = 21,718.32

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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.