Home / 30,916.89-42,665.54-16,769.84

Finding the Fourth Proportional to 30,916.89, 42,665.54 and 16,769.84

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Solution

The fourth proportional to 30,916.89, 42,665.54 and 16,769.84 is: 23,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,916.89 : 42,665.54 = 16,769.84 : x
  2. Step 2: Convert to fraction form
    30,916.89/42,665.54 = 16,769.84/x
  3. Step 3: Cross multiply
    30,916.89x = 42,665.54 × 16,769.84
  4. Step 4: Simplify right side
    30,916.89x = 715,493,982.14
  5. Step 5: Solve for x
    x = 715,493,982.14/30,916.89
  6. Step 6: Final answer
    x = 23,142.50

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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.