Home / 28,977.11-39,974.29-18,900.98

Finding the Fourth Proportional to 28,977.11, 39,974.29 and 18,900.98

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Solution

The fourth proportional to 28,977.11, 39,974.29 and 18,900.98 is: 26,074.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.11 : 39,974.29 = 18,900.98 : x
  2. Step 2: Convert to fraction form
    28,977.11/39,974.29 = 18,900.98/x
  3. Step 3: Cross multiply
    28,977.11x = 39,974.29 × 18,900.98
  4. Step 4: Simplify right side
    28,977.11x = 755,553,055.93
  5. Step 5: Solve for x
    x = 755,553,055.93/28,977.11
  6. Step 6: Final answer
    x = 26,074.14

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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.