Home / 21,403.44-29,536.65-11,972.07

Finding the Fourth Proportional to 21,403.44, 29,536.65 and 11,972.07

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Solution

The fourth proportional to 21,403.44, 29,536.65 and 11,972.07 is: 16,521.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.44 : 29,536.65 = 11,972.07 : x
  2. Step 2: Convert to fraction form
    21,403.44/29,536.65 = 11,972.07/x
  3. Step 3: Cross multiply
    21,403.44x = 29,536.65 × 11,972.07
  4. Step 4: Simplify right side
    21,403.44x = 353,614,841.37
  5. Step 5: Solve for x
    x = 353,614,841.37/21,403.44
  6. Step 6: Final answer
    x = 16,521.40

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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.