Home / 12,457.10-18,681.60-4,135.70

Finding the Fourth Proportional to 12,457.10, 18,681.60 and 4,135.70

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Solution

The fourth proportional to 12,457.10, 18,681.60 and 4,135.70 is: 6,202.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.10 : 18,681.60 = 4,135.70 : x
  2. Step 2: Convert to fraction form
    12,457.10/18,681.60 = 4,135.70/x
  3. Step 3: Cross multiply
    12,457.10x = 18,681.60 × 4,135.70
  4. Step 4: Simplify right side
    12,457.10x = 77,261,493.12
  5. Step 5: Solve for x
    x = 77,261,493.12/12,457.10
  6. Step 6: Final answer
    x = 6,202.21

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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.