Home / 21,173.71-29,219.52-11,613.40

Finding the Fourth Proportional to 21,173.71, 29,219.52 and 11,613.40

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Solution

The fourth proportional to 21,173.71, 29,219.52 and 11,613.40 is: 16,026.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.71 : 29,219.52 = 11,613.40 : x
  2. Step 2: Convert to fraction form
    21,173.71/29,219.52 = 11,613.40/x
  3. Step 3: Cross multiply
    21,173.71x = 29,219.52 × 11,613.40
  4. Step 4: Simplify right side
    21,173.71x = 339,338,108.43
  5. Step 5: Solve for x
    x = 339,338,108.43/21,173.71
  6. Step 6: Final answer
    x = 16,026.39

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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.