Home / 20,437.98-28,201.50-11,485.05

Finding the Fourth Proportional to 20,437.98, 28,201.50 and 11,485.05

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Solution

The fourth proportional to 20,437.98, 28,201.50 and 11,485.05 is: 15,847.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.98 : 28,201.50 = 11,485.05 : x
  2. Step 2: Convert to fraction form
    20,437.98/28,201.50 = 11,485.05/x
  3. Step 3: Cross multiply
    20,437.98x = 28,201.50 × 11,485.05
  4. Step 4: Simplify right side
    20,437.98x = 323,895,637.58
  5. Step 5: Solve for x
    x = 323,895,637.58/20,437.98
  6. Step 6: Final answer
    x = 15,847.73

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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.