Home / 20,412.49-28,167.29-11,457.94

Finding the Fourth Proportional to 20,412.49, 28,167.29 and 11,457.94

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Solution

The fourth proportional to 20,412.49, 28,167.29 and 11,457.94 is: 15,810.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.49 : 28,167.29 = 11,457.94 : x
  2. Step 2: Convert to fraction form
    20,412.49/28,167.29 = 11,457.94/x
  3. Step 3: Cross multiply
    20,412.49x = 28,167.29 × 11,457.94
  4. Step 4: Simplify right side
    20,412.49x = 322,738,991.07
  5. Step 5: Solve for x
    x = 322,738,991.07/20,412.49
  6. Step 6: Final answer
    x = 15,810.86

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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.