Home / 21,657.63-29,887.52-12,226.80

Finding the Fourth Proportional to 21,657.63, 29,887.52 and 12,226.80

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Solution

The fourth proportional to 21,657.63, 29,887.52 and 12,226.80 is: 16,872.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.63 : 29,887.52 = 12,226.80 : x
  2. Step 2: Convert to fraction form
    21,657.63/29,887.52 = 12,226.80/x
  3. Step 3: Cross multiply
    21,657.63x = 29,887.52 × 12,226.80
  4. Step 4: Simplify right side
    21,657.63x = 365,428,610.67
  5. Step 5: Solve for x
    x = 365,428,610.67/21,657.63
  6. Step 6: Final answer
    x = 16,872.98

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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.