Home / 30,938.63-42,706.37-18,363.38

Finding the Fourth Proportional to 30,938.63, 42,706.37 and 18,363.38

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Solution

The fourth proportional to 30,938.63, 42,706.37 and 18,363.38 is: 25,348.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.63 : 42,706.37 = 18,363.38 : x
  2. Step 2: Convert to fraction form
    30,938.63/42,706.37 = 18,363.38/x
  3. Step 3: Cross multiply
    30,938.63x = 42,706.37 × 18,363.38
  4. Step 4: Simplify right side
    30,938.63x = 784,233,133.11
  5. Step 5: Solve for x
    x = 784,233,133.11/30,938.63
  6. Step 6: Final answer
    x = 25,348.03

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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.