Home / 28,300.24-39,055.07-15,553.78

Finding the Fourth Proportional to 28,300.24, 39,055.07 and 15,553.78

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Solution

The fourth proportional to 28,300.24, 39,055.07 and 15,553.78 is: 21,464.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,300.24 : 39,055.07 = 15,553.78 : x
  2. Step 2: Convert to fraction form
    28,300.24/39,055.07 = 15,553.78/x
  3. Step 3: Cross multiply
    28,300.24x = 39,055.07 × 15,553.78
  4. Step 4: Simplify right side
    28,300.24x = 607,453,693.62
  5. Step 5: Solve for x
    x = 607,453,693.62/28,300.24
  6. Step 6: Final answer
    x = 21,464.62

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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.