Home / 19,279.08-28,911.33-10,509.21

Finding the Fourth Proportional to 19,279.08, 28,911.33 and 10,509.21

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Solution

The fourth proportional to 19,279.08, 28,911.33 and 10,509.21 is: 15,759.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,279.08 : 28,911.33 = 10,509.21 : x
  2. Step 2: Convert to fraction form
    19,279.08/28,911.33 = 10,509.21/x
  3. Step 3: Cross multiply
    19,279.08x = 28,911.33 × 10,509.21
  4. Step 4: Simplify right side
    19,279.08x = 303,835,238.35
  5. Step 5: Solve for x
    x = 303,835,238.35/19,279.08
  6. Step 6: Final answer
    x = 15,759.84

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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.