Home / 30,969.57-42,737.10-16,822.38

Finding the Fourth Proportional to 30,969.57, 42,737.10 and 16,822.38

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Solution

The fourth proportional to 30,969.57, 42,737.10 and 16,822.38 is: 23,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,969.57 : 42,737.10 = 16,822.38 : x
  2. Step 2: Convert to fraction form
    30,969.57/42,737.10 = 16,822.38/x
  3. Step 3: Cross multiply
    30,969.57x = 42,737.10 × 16,822.38
  4. Step 4: Simplify right side
    30,969.57x = 718,939,736.30
  5. Step 5: Solve for x
    x = 718,939,736.30/30,969.57
  6. Step 6: Final answer
    x = 23,214.39

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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.