Home / 28,454.41-42,689.85-11,811.34

Finding the Fourth Proportional to 28,454.41, 42,689.85 and 11,811.34

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Solution

The fourth proportional to 28,454.41, 42,689.85 and 11,811.34 is: 17,720.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.41 : 42,689.85 = 11,811.34 : x
  2. Step 2: Convert to fraction form
    28,454.41/42,689.85 = 11,811.34/x
  3. Step 3: Cross multiply
    28,454.41x = 42,689.85 × 11,811.34
  4. Step 4: Simplify right side
    28,454.41x = 504,224,332.90
  5. Step 5: Solve for x
    x = 504,224,332.90/28,454.41
  6. Step 6: Final answer
    x = 17,720.43

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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.