Home / 15,920.58-23,879.49-5,390.38

Finding the Fourth Proportional to 15,920.58, 23,879.49 and 5,390.38

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Solution

The fourth proportional to 15,920.58, 23,879.49 and 5,390.38 is: 8,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.58 : 23,879.49 = 5,390.38 : x
  2. Step 2: Convert to fraction form
    15,920.58/23,879.49 = 5,390.38/x
  3. Step 3: Cross multiply
    15,920.58x = 23,879.49 × 5,390.38
  4. Step 4: Simplify right side
    15,920.58x = 128,719,525.31
  5. Step 5: Solve for x
    x = 128,719,525.31/15,920.58
  6. Step 6: Final answer
    x = 8,085.10

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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.