Home / 13,850.66-20,782.95-6,455.70

Finding the Fourth Proportional to 13,850.66, 20,782.95 and 6,455.70

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Solution

The fourth proportional to 13,850.66, 20,782.95 and 6,455.70 is: 9,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,850.66 : 20,782.95 = 6,455.70 : x
  2. Step 2: Convert to fraction form
    13,850.66/20,782.95 = 6,455.70/x
  3. Step 3: Cross multiply
    13,850.66x = 20,782.95 × 6,455.70
  4. Step 4: Simplify right side
    13,850.66x = 134,168,466.11
  5. Step 5: Solve for x
    x = 134,168,466.11/13,850.66
  6. Step 6: Final answer
    x = 9,686.79

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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.