Home / 28,528.80-39,356.50-18,460.50

Finding the Fourth Proportional to 28,528.80, 39,356.50 and 18,460.50

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Solution

The fourth proportional to 28,528.80, 39,356.50 and 18,460.50 is: 25,466.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,528.80 : 39,356.50 = 18,460.50 : x
  2. Step 2: Convert to fraction form
    28,528.80/39,356.50 = 18,460.50/x
  3. Step 3: Cross multiply
    28,528.80x = 39,356.50 × 18,460.50
  4. Step 4: Simplify right side
    28,528.80x = 726,540,668.25
  5. Step 5: Solve for x
    x = 726,540,668.25/28,528.80
  6. Step 6: Final answer
    x = 25,466.92

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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.