Home / 28,400.63-39,193.67-15,826.19

Finding the Fourth Proportional to 28,400.63, 39,193.67 and 15,826.19

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Solution

The fourth proportional to 28,400.63, 39,193.67 and 15,826.19 is: 21,840.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.63 : 39,193.67 = 15,826.19 : x
  2. Step 2: Convert to fraction form
    28,400.63/39,193.67 = 15,826.19/x
  3. Step 3: Cross multiply
    28,400.63x = 39,193.67 × 15,826.19
  4. Step 4: Simplify right side
    28,400.63x = 620,286,311.81
  5. Step 5: Solve for x
    x = 620,286,311.81/28,400.63
  6. Step 6: Final answer
    x = 21,840.59

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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.