Home / 28,785.30-39,722.37-19,352.34

Finding the Fourth Proportional to 28,785.30, 39,722.37 and 19,352.34

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Solution

The fourth proportional to 28,785.30, 39,722.37 and 19,352.34 is: 26,705.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.30 : 39,722.37 = 19,352.34 : x
  2. Step 2: Convert to fraction form
    28,785.30/39,722.37 = 19,352.34/x
  3. Step 3: Cross multiply
    28,785.30x = 39,722.37 × 19,352.34
  4. Step 4: Simplify right side
    28,785.30x = 768,720,809.85
  5. Step 5: Solve for x
    x = 768,720,809.85/28,785.30
  6. Step 6: Final answer
    x = 26,705.33

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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.