Home / 20,707.45-28,576.97-11,276.35

Finding the Fourth Proportional to 20,707.45, 28,576.97 and 11,276.35

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Solution

The fourth proportional to 20,707.45, 28,576.97 and 11,276.35 is: 15,561.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.45 : 28,576.97 = 11,276.35 : x
  2. Step 2: Convert to fraction form
    20,707.45/28,576.97 = 11,276.35/x
  3. Step 3: Cross multiply
    20,707.45x = 28,576.97 × 11,276.35
  4. Step 4: Simplify right side
    20,707.45x = 322,243,830.12
  5. Step 5: Solve for x
    x = 322,243,830.12/20,707.45
  6. Step 6: Final answer
    x = 15,561.74

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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.