Home / 20,613.40-28,466.70-14,256.28

Finding the Fourth Proportional to 20,613.40, 28,466.70 and 14,256.28

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Solution

The fourth proportional to 20,613.40, 28,466.70 and 14,256.28 is: 19,687.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.40 : 28,466.70 = 14,256.28 : x
  2. Step 2: Convert to fraction form
    20,613.40/28,466.70 = 14,256.28/x
  3. Step 3: Cross multiply
    20,613.40x = 28,466.70 × 14,256.28
  4. Step 4: Simplify right side
    20,613.40x = 405,829,245.88
  5. Step 5: Solve for x
    x = 405,829,245.88/20,613.40
  6. Step 6: Final answer
    x = 19,687.64

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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.