Home / 21,108.36-29,141.22-14,403.96

Finding the Fourth Proportional to 21,108.36, 29,141.22 and 14,403.96

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Solution

The fourth proportional to 21,108.36, 29,141.22 and 14,403.96 is: 19,885.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.36 : 29,141.22 = 14,403.96 : x
  2. Step 2: Convert to fraction form
    21,108.36/29,141.22 = 14,403.96/x
  3. Step 3: Cross multiply
    21,108.36x = 29,141.22 × 14,403.96
  4. Step 4: Simplify right side
    21,108.36x = 419,748,967.23
  5. Step 5: Solve for x
    x = 419,748,967.23/21,108.36
  6. Step 6: Final answer
    x = 19,885.44

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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.