Home / 21,430.82-29,554.80-14,704.58

Finding the Fourth Proportional to 21,430.82, 29,554.80 and 14,704.58

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Solution

The fourth proportional to 21,430.82, 29,554.80 and 14,704.58 is: 20,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.82 : 29,554.80 = 14,704.58 : x
  2. Step 2: Convert to fraction form
    21,430.82/29,554.80 = 14,704.58/x
  3. Step 3: Cross multiply
    21,430.82x = 29,554.80 × 14,704.58
  4. Step 4: Simplify right side
    21,430.82x = 434,590,920.98
  5. Step 5: Solve for x
    x = 434,590,920.98/21,430.82
  6. Step 6: Final answer
    x = 20,278.78

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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.