Home / 19,890.58-27,450.60-11,395.50

Finding the Fourth Proportional to 19,890.58, 27,450.60 and 11,395.50

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Solution

The fourth proportional to 19,890.58, 27,450.60 and 11,395.50 is: 15,726.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.58 : 27,450.60 = 11,395.50 : x
  2. Step 2: Convert to fraction form
    19,890.58/27,450.60 = 11,395.50/x
  3. Step 3: Cross multiply
    19,890.58x = 27,450.60 × 11,395.50
  4. Step 4: Simplify right side
    19,890.58x = 312,813,118.07
  5. Step 5: Solve for x
    x = 312,813,118.07/19,890.58
  6. Step 6: Final answer
    x = 15,726.70

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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.