Home / 12,885.66-19,327.41-6,642.30

Finding the Fourth Proportional to 12,885.66, 19,327.41 and 6,642.30

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Solution

The fourth proportional to 12,885.66, 19,327.41 and 6,642.30 is: 9,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.66 : 19,327.41 = 6,642.30 : x
  2. Step 2: Convert to fraction form
    12,885.66/19,327.41 = 6,642.30/x
  3. Step 3: Cross multiply
    12,885.66x = 19,327.41 × 6,642.30
  4. Step 4: Simplify right side
    12,885.66x = 128,378,455.44
  5. Step 5: Solve for x
    x = 128,378,455.44/12,885.66
  6. Step 6: Final answer
    x = 9,962.89

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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.