Home / 28,364.34-39,140.37-15,790.26

Finding the Fourth Proportional to 28,364.34, 39,140.37 and 15,790.26

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Solution

The fourth proportional to 28,364.34, 39,140.37 and 15,790.26 is: 21,789.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.34 : 39,140.37 = 15,790.26 : x
  2. Step 2: Convert to fraction form
    28,364.34/39,140.37 = 15,790.26/x
  3. Step 3: Cross multiply
    28,364.34x = 39,140.37 × 15,790.26
  4. Step 4: Simplify right side
    28,364.34x = 618,036,618.80
  5. Step 5: Solve for x
    x = 618,036,618.80/28,364.34
  6. Step 6: Final answer
    x = 21,789.21

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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.