Home / 28,577.69-39,436.32-15,830.36

Finding the Fourth Proportional to 28,577.69, 39,436.32 and 15,830.36

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Solution

The fourth proportional to 28,577.69, 39,436.32 and 15,830.36 is: 21,845.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,577.69 : 39,436.32 = 15,830.36 : x
  2. Step 2: Convert to fraction form
    28,577.69/39,436.32 = 15,830.36/x
  3. Step 3: Cross multiply
    28,577.69x = 39,436.32 × 15,830.36
  4. Step 4: Simplify right side
    28,577.69x = 624,291,142.68
  5. Step 5: Solve for x
    x = 624,291,142.68/28,577.69
  6. Step 6: Final answer
    x = 21,845.40

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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.