Home / 18,977.42-28,427.86-15,888.29

Finding the Fourth Proportional to 18,977.42, 28,427.86 and 15,888.29

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Solution

The fourth proportional to 18,977.42, 28,427.86 and 15,888.29 is: 23,800.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.42 : 28,427.86 = 15,888.29 : x
  2. Step 2: Convert to fraction form
    18,977.42/28,427.86 = 15,888.29/x
  3. Step 3: Cross multiply
    18,977.42x = 28,427.86 × 15,888.29
  4. Step 4: Simplify right side
    18,977.42x = 451,669,961.48
  5. Step 5: Solve for x
    x = 451,669,961.48/18,977.42
  6. Step 6: Final answer
    x = 23,800.38

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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.