Home / 20,411.04-28,167.21-11,458.56

Finding the Fourth Proportional to 20,411.04, 28,167.21 and 11,458.56

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Solution

The fourth proportional to 20,411.04, 28,167.21 and 11,458.56 is: 15,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.04 : 28,167.21 = 11,458.56 : x
  2. Step 2: Convert to fraction form
    20,411.04/28,167.21 = 11,458.56/x
  3. Step 3: Cross multiply
    20,411.04x = 28,167.21 × 11,458.56
  4. Step 4: Simplify right side
    20,411.04x = 322,755,617.37
  5. Step 5: Solve for x
    x = 322,755,617.37/20,411.04
  6. Step 6: Final answer
    x = 15,812.80

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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.