Home / 20,555.98-28,367.63-11,603.68

Finding the Fourth Proportional to 20,555.98, 28,367.63 and 11,603.68

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Solution

The fourth proportional to 20,555.98, 28,367.63 and 11,603.68 is: 16,013.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.98 : 28,367.63 = 11,603.68 : x
  2. Step 2: Convert to fraction form
    20,555.98/28,367.63 = 11,603.68/x
  3. Step 3: Cross multiply
    20,555.98x = 28,367.63 × 11,603.68
  4. Step 4: Simplify right side
    20,555.98x = 329,168,900.88
  5. Step 5: Solve for x
    x = 329,168,900.88/20,555.98
  6. Step 6: Final answer
    x = 16,013.29

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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.