Home / 20,776.98-28,668.43-11,700.93

Finding the Fourth Proportional to 20,776.98, 28,668.43 and 11,700.93

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Solution

The fourth proportional to 20,776.98, 28,668.43 and 11,700.93 is: 16,145.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.98 : 28,668.43 = 11,700.93 : x
  2. Step 2: Convert to fraction form
    20,776.98/28,668.43 = 11,700.93/x
  3. Step 3: Cross multiply
    20,776.98x = 28,668.43 × 11,700.93
  4. Step 4: Simplify right side
    20,776.98x = 335,447,263.39
  5. Step 5: Solve for x
    x = 335,447,263.39/20,776.98
  6. Step 6: Final answer
    x = 16,145.14

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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.