Home / 28,421.54-39,220.82-15,675.26

Finding the Fourth Proportional to 28,421.54, 39,220.82 and 15,675.26

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Solution

The fourth proportional to 28,421.54, 39,220.82 and 15,675.26 is: 21,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.54 : 39,220.82 = 15,675.26 : x
  2. Step 2: Convert to fraction form
    28,421.54/39,220.82 = 15,675.26/x
  3. Step 3: Cross multiply
    28,421.54x = 39,220.82 × 15,675.26
  4. Step 4: Simplify right side
    28,421.54x = 614,796,276.43
  5. Step 5: Solve for x
    x = 614,796,276.43/28,421.54
  6. Step 6: Final answer
    x = 21,631.35

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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.