Home / 20,411.46-28,172.41-13,333.82

Finding the Fourth Proportional to 20,411.46, 28,172.41 and 13,333.82

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Solution

The fourth proportional to 20,411.46, 28,172.41 and 13,333.82 is: 18,403.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.46 : 28,172.41 = 13,333.82 : x
  2. Step 2: Convert to fraction form
    20,411.46/28,172.41 = 13,333.82/x
  3. Step 3: Cross multiply
    20,411.46x = 28,172.41 × 13,333.82
  4. Step 4: Simplify right side
    20,411.46x = 375,645,669.71
  5. Step 5: Solve for x
    x = 375,645,669.71/20,411.46
  6. Step 6: Final answer
    x = 18,403.66

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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.