Home / 20,965.23-28,930.57-12,466.91

Finding the Fourth Proportional to 20,965.23, 28,930.57 and 12,466.91

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Solution

The fourth proportional to 20,965.23, 28,930.57 and 12,466.91 is: 17,203.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.23 : 28,930.57 = 12,466.91 : x
  2. Step 2: Convert to fraction form
    20,965.23/28,930.57 = 12,466.91/x
  3. Step 3: Cross multiply
    20,965.23x = 28,930.57 × 12,466.91
  4. Step 4: Simplify right side
    20,965.23x = 360,674,853.60
  5. Step 5: Solve for x
    x = 360,674,853.60/20,965.23
  6. Step 6: Final answer
    x = 17,203.48

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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.