Home / 28,478.37-42,720.97-11,849.65

Finding the Fourth Proportional to 28,478.37, 42,720.97 and 11,849.65

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Solution

The fourth proportional to 28,478.37, 42,720.97 and 11,849.65 is: 17,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.37 : 42,720.97 = 11,849.65 : x
  2. Step 2: Convert to fraction form
    28,478.37/42,720.97 = 11,849.65/x
  3. Step 3: Cross multiply
    28,478.37x = 42,720.97 × 11,849.65
  4. Step 4: Simplify right side
    28,478.37x = 506,228,542.16
  5. Step 5: Solve for x
    x = 506,228,542.16/28,478.37
  6. Step 6: Final answer
    x = 17,775.90

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1.5x scale

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.