Home / 21,658.60-29,888.70-12,226.84

Finding the Fourth Proportional to 21,658.60, 29,888.70 and 12,226.84

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Solution

The fourth proportional to 21,658.60, 29,888.70 and 12,226.84 is: 16,872.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.60 : 29,888.70 = 12,226.84 : x
  2. Step 2: Convert to fraction form
    21,658.60/29,888.70 = 12,226.84/x
  3. Step 3: Cross multiply
    21,658.60x = 29,888.70 × 12,226.84
  4. Step 4: Simplify right side
    21,658.60x = 365,444,352.71
  5. Step 5: Solve for x
    x = 365,444,352.71/21,658.60
  6. Step 6: Final answer
    x = 16,872.94

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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.