Home / 28,728.03-39,645.63-17,399.64

Finding the Fourth Proportional to 28,728.03, 39,645.63 and 17,399.64

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Solution

The fourth proportional to 28,728.03, 39,645.63 and 17,399.64 is: 24,012.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.03 : 39,645.63 = 17,399.64 : x
  2. Step 2: Convert to fraction form
    28,728.03/39,645.63 = 17,399.64/x
  3. Step 3: Cross multiply
    28,728.03x = 39,645.63 × 17,399.64
  4. Step 4: Simplify right side
    28,728.03x = 689,819,689.57
  5. Step 5: Solve for x
    x = 689,819,689.57/28,728.03
  6. Step 6: Final answer
    x = 24,012.08

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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.