Home / 21,523.69-29,699.40-12,090.43

Finding the Fourth Proportional to 21,523.69, 29,699.40 and 12,090.43

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Solution

The fourth proportional to 21,523.69, 29,699.40 and 12,090.43 is: 16,682.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,523.69 : 29,699.40 = 12,090.43 : x
  2. Step 2: Convert to fraction form
    21,523.69/29,699.40 = 12,090.43/x
  3. Step 3: Cross multiply
    21,523.69x = 29,699.40 × 12,090.43
  4. Step 4: Simplify right side
    21,523.69x = 359,078,516.74
  5. Step 5: Solve for x
    x = 359,078,516.74/21,523.69
  6. Step 6: Final answer
    x = 16,682.94

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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.