Home / 28,942.34-39,929.01-18,180.89

Finding the Fourth Proportional to 28,942.34, 39,929.01 and 18,180.89

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Solution

The fourth proportional to 28,942.34, 39,929.01 and 18,180.89 is: 25,082.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,942.34 : 39,929.01 = 18,180.89 : x
  2. Step 2: Convert to fraction form
    28,942.34/39,929.01 = 18,180.89/x
  3. Step 3: Cross multiply
    28,942.34x = 39,929.01 × 18,180.89
  4. Step 4: Simplify right side
    28,942.34x = 725,944,938.62
  5. Step 5: Solve for x
    x = 725,944,938.62/28,942.34
  6. Step 6: Final answer
    x = 25,082.45

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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.