Home / 30,975.48-42,745.06-16,828.04

Finding the Fourth Proportional to 30,975.48, 42,745.06 and 16,828.04

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Solution

The fourth proportional to 30,975.48, 42,745.06 and 16,828.04 is: 23,222.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,975.48 : 42,745.06 = 16,828.04 : x
  2. Step 2: Convert to fraction form
    30,975.48/42,745.06 = 16,828.04/x
  3. Step 3: Cross multiply
    30,975.48x = 42,745.06 × 16,828.04
  4. Step 4: Simplify right side
    30,975.48x = 719,315,579.48
  5. Step 5: Solve for x
    x = 719,315,579.48/30,975.48
  6. Step 6: Final answer
    x = 23,222.10

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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.