Home / 14,246.40-21,369.40-6,455.20

Finding the Fourth Proportional to 14,246.40, 21,369.40 and 6,455.20

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Solution

The fourth proportional to 14,246.40, 21,369.40 and 6,455.20 is: 9,682.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,246.40 : 21,369.40 = 6,455.20 : x
  2. Step 2: Convert to fraction form
    14,246.40/21,369.40 = 6,455.20/x
  3. Step 3: Cross multiply
    14,246.40x = 21,369.40 × 6,455.20
  4. Step 4: Simplify right side
    14,246.40x = 137,943,750.88
  5. Step 5: Solve for x
    x = 137,943,750.88/14,246.40
  6. Step 6: Final answer
    x = 9,682.71

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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.