Home / 20,659.24-28,501.86-12,698.92

Finding the Fourth Proportional to 20,659.24, 28,501.86 and 12,698.92

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Solution

The fourth proportional to 20,659.24, 28,501.86 and 12,698.92 is: 17,519.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.24 : 28,501.86 = 12,698.92 : x
  2. Step 2: Convert to fraction form
    20,659.24/28,501.86 = 12,698.92/x
  3. Step 3: Cross multiply
    20,659.24x = 28,501.86 × 12,698.92
  4. Step 4: Simplify right side
    20,659.24x = 361,942,839.99
  5. Step 5: Solve for x
    x = 361,942,839.99/20,659.24
  6. Step 6: Final answer
    x = 17,519.66

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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.