Home / 28,103.77-38,783.99-15,529.33

Finding the Fourth Proportional to 28,103.77, 38,783.99 and 15,529.33

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Solution

The fourth proportional to 28,103.77, 38,783.99 and 15,529.33 is: 21,430.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.77 : 38,783.99 = 15,529.33 : x
  2. Step 2: Convert to fraction form
    28,103.77/38,783.99 = 15,529.33/x
  3. Step 3: Cross multiply
    28,103.77x = 38,783.99 × 15,529.33
  4. Step 4: Simplify right side
    28,103.77x = 602,289,379.43
  5. Step 5: Solve for x
    x = 602,289,379.43/28,103.77
  6. Step 6: Final answer
    x = 21,430.91

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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.