Home / 20,411.74-28,166.25-11,457.19

Finding the Fourth Proportional to 20,411.74, 28,166.25 and 11,457.19

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Solution

The fourth proportional to 20,411.74, 28,166.25 and 11,457.19 is: 15,809.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.74 : 28,166.25 = 11,457.19 : x
  2. Step 2: Convert to fraction form
    20,411.74/28,166.25 = 11,457.19/x
  3. Step 3: Cross multiply
    20,411.74x = 28,166.25 × 11,457.19
  4. Step 4: Simplify right side
    20,411.74x = 322,706,007.42
  5. Step 5: Solve for x
    x = 322,706,007.42/20,411.74
  6. Step 6: Final answer
    x = 15,809.83

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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.