Home / 28,478.03-42,732.36-11,849.54

Finding the Fourth Proportional to 28,478.03, 42,732.36 and 11,849.54

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Solution

The fourth proportional to 28,478.03, 42,732.36 and 11,849.54 is: 17,780.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.03 : 42,732.36 = 11,849.54 : x
  2. Step 2: Convert to fraction form
    28,478.03/42,732.36 = 11,849.54/x
  3. Step 3: Cross multiply
    28,478.03x = 42,732.36 × 11,849.54
  4. Step 4: Simplify right side
    28,478.03x = 506,358,595.45
  5. Step 5: Solve for x
    x = 506,358,595.45/28,478.03
  6. Step 6: Final answer
    x = 17,780.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.