Home / 14,456.60-21,620.10-12,123.80

Finding the Fourth Proportional to 14,456.60, 21,620.10 and 12,123.80

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Solution

The fourth proportional to 14,456.60, 21,620.10 and 12,123.80 is: 18,131.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,456.60 : 21,620.10 = 12,123.80 : x
  2. Step 2: Convert to fraction form
    14,456.60/21,620.10 = 12,123.80/x
  3. Step 3: Cross multiply
    14,456.60x = 21,620.10 × 12,123.80
  4. Step 4: Simplify right side
    14,456.60x = 262,117,768.38
  5. Step 5: Solve for x
    x = 262,117,768.38/14,456.60
  6. Step 6: Final answer
    x = 18,131.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.