Home / 30,769.28-42,461.58-16,622.12

Finding the Fourth Proportional to 30,769.28, 42,461.58 and 16,622.12

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Solution

The fourth proportional to 30,769.28, 42,461.58 and 16,622.12 is: 22,938.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,769.28 : 42,461.58 = 16,622.12 : x
  2. Step 2: Convert to fraction form
    30,769.28/42,461.58 = 16,622.12/x
  3. Step 3: Cross multiply
    30,769.28x = 42,461.58 × 16,622.12
  4. Step 4: Simplify right side
    30,769.28x = 705,801,478.15
  5. Step 5: Solve for x
    x = 705,801,478.15/30,769.28
  6. Step 6: Final answer
    x = 22,938.51

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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.