Home / 20,412.89-28,167.62-11,461.37

Finding the Fourth Proportional to 20,412.89, 28,167.62 and 11,461.37

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Solution

The fourth proportional to 20,412.89, 28,167.62 and 11,461.37 is: 15,815.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.89 : 28,167.62 = 11,461.37 : x
  2. Step 2: Convert to fraction form
    20,412.89/28,167.62 = 11,461.37/x
  3. Step 3: Cross multiply
    20,412.89x = 28,167.62 × 11,461.37
  4. Step 4: Simplify right side
    20,412.89x = 322,839,457.53
  5. Step 5: Solve for x
    x = 322,839,457.53/20,412.89
  6. Step 6: Final answer
    x = 15,815.47

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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.