Home / 28,575.69-39,433.56-15,828.36

Finding the Fourth Proportional to 28,575.69, 39,433.56 and 15,828.36

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Solution

The fourth proportional to 28,575.69, 39,433.56 and 15,828.36 is: 21,842.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.69 : 39,433.56 = 15,828.36 : x
  2. Step 2: Convert to fraction form
    28,575.69/39,433.56 = 15,828.36/x
  3. Step 3: Cross multiply
    28,575.69x = 39,433.56 × 15,828.36
  4. Step 4: Simplify right side
    28,575.69x = 624,168,583.76
  5. Step 5: Solve for x
    x = 624,168,583.76/28,575.69
  6. Step 6: Final answer
    x = 21,842.64

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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.