Home / 28,564.96-39,419.40-15,818.44

Finding the Fourth Proportional to 28,564.96, 39,419.40 and 15,818.44

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Solution

The fourth proportional to 28,564.96, 39,419.40 and 15,818.44 is: 21,829.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,564.96 : 39,419.40 = 15,818.44 : x
  2. Step 2: Convert to fraction form
    28,564.96/39,419.40 = 15,818.44/x
  3. Step 3: Cross multiply
    28,564.96x = 39,419.40 × 15,818.44
  4. Step 4: Simplify right side
    28,564.96x = 623,553,413.74
  5. Step 5: Solve for x
    x = 623,553,413.74/28,564.96
  6. Step 6: Final answer
    x = 21,829.31

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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.