Home / 14,520.78-20,040.12-8,554.32

Finding the Fourth Proportional to 14,520.78, 20,040.12 and 8,554.32

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Solution

The fourth proportional to 14,520.78, 20,040.12 and 8,554.32 is: 11,805.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.78 : 20,040.12 = 8,554.32 : x
  2. Step 2: Convert to fraction form
    14,520.78/20,040.12 = 8,554.32/x
  3. Step 3: Cross multiply
    14,520.78x = 20,040.12 × 8,554.32
  4. Step 4: Simplify right side
    14,520.78x = 171,429,599.32
  5. Step 5: Solve for x
    x = 171,429,599.32/14,520.78
  6. Step 6: Final answer
    x = 11,805.81

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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.