Home / 20,123.80-27,764.40-11,624.80

Finding the Fourth Proportional to 20,123.80, 27,764.40 and 11,624.80

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Solution

The fourth proportional to 20,123.80, 27,764.40 and 11,624.80 is: 16,038.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.80 : 27,764.40 = 11,624.80 : x
  2. Step 2: Convert to fraction form
    20,123.80/27,764.40 = 11,624.80/x
  3. Step 3: Cross multiply
    20,123.80x = 27,764.40 × 11,624.80
  4. Step 4: Simplify right side
    20,123.80x = 322,755,597.12
  5. Step 5: Solve for x
    x = 322,755,597.12/20,123.80
  6. Step 6: Final answer
    x = 16,038.50

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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.