Home / 20,411.58-28,166.05-11,457.33

Finding the Fourth Proportional to 20,411.58, 28,166.05 and 11,457.33

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Solution

The fourth proportional to 20,411.58, 28,166.05 and 11,457.33 is: 15,810.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.58 : 28,166.05 = 11,457.33 : x
  2. Step 2: Convert to fraction form
    20,411.58/28,166.05 = 11,457.33/x
  3. Step 3: Cross multiply
    20,411.58x = 28,166.05 × 11,457.33
  4. Step 4: Simplify right side
    20,411.58x = 322,707,729.65
  5. Step 5: Solve for x
    x = 322,707,729.65/20,411.58
  6. Step 6: Final answer
    x = 15,810.03

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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.