Home / 28,812.21-39,759.81-16,875.30

Finding the Fourth Proportional to 28,812.21, 39,759.81 and 16,875.30

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Solution

The fourth proportional to 28,812.21, 39,759.81 and 16,875.30 is: 23,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.21 : 39,759.81 = 16,875.30 : x
  2. Step 2: Convert to fraction form
    28,812.21/39,759.81 = 16,875.30/x
  3. Step 3: Cross multiply
    28,812.21x = 39,759.81 × 16,875.30
  4. Step 4: Simplify right side
    28,812.21x = 670,958,721.69
  5. Step 5: Solve for x
    x = 670,958,721.69/28,812.21
  6. Step 6: Final answer
    x = 23,287.30

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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.