Home / 28,421.24-39,220.79-15,675.60

Finding the Fourth Proportional to 28,421.24, 39,220.79 and 15,675.60

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Solution

The fourth proportional to 28,421.24, 39,220.79 and 15,675.60 is: 21,632.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.24 : 39,220.79 = 15,675.60 : x
  2. Step 2: Convert to fraction form
    28,421.24/39,220.79 = 15,675.60/x
  3. Step 3: Cross multiply
    28,421.24x = 39,220.79 × 15,675.60
  4. Step 4: Simplify right side
    28,421.24x = 614,809,415.72
  5. Step 5: Solve for x
    x = 614,809,415.72/28,421.24
  6. Step 6: Final answer
    x = 21,632.04

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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.