Home / 20,411.19-28,166.54-11,458.53

Finding the Fourth Proportional to 20,411.19, 28,166.54 and 11,458.53

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Solution

The fourth proportional to 20,411.19, 28,166.54 and 11,458.53 is: 15,812.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.19 : 28,166.54 = 11,458.53 : x
  2. Step 2: Convert to fraction form
    20,411.19/28,166.54 = 11,458.53/x
  3. Step 3: Cross multiply
    20,411.19x = 28,166.54 × 11,458.53
  4. Step 4: Simplify right side
    20,411.19x = 322,747,086.29
  5. Step 5: Solve for x
    x = 322,747,086.29/20,411.19
  6. Step 6: Final answer
    x = 15,812.26

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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.