Home / 21,355.98-29,469.18-14,647.35

Finding the Fourth Proportional to 21,355.98, 29,469.18 and 14,647.35

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Solution

The fourth proportional to 21,355.98, 29,469.18 and 14,647.35 is: 20,211.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,355.98 : 29,469.18 = 14,647.35 : x
  2. Step 2: Convert to fraction form
    21,355.98/29,469.18 = 14,647.35/x
  3. Step 3: Cross multiply
    21,355.98x = 29,469.18 × 14,647.35
  4. Step 4: Simplify right side
    21,355.98x = 431,645,393.67
  5. Step 5: Solve for x
    x = 431,645,393.67/21,355.98
  6. Step 6: Final answer
    x = 20,211.92

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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.