Home / 20,842.80-28,762.44-11,411.04

Finding the Fourth Proportional to 20,842.80, 28,762.44 and 11,411.04

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Solution

The fourth proportional to 20,842.80, 28,762.44 and 11,411.04 is: 15,746.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.80 : 28,762.44 = 11,411.04 : x
  2. Step 2: Convert to fraction form
    20,842.80/28,762.44 = 11,411.04/x
  3. Step 3: Cross multiply
    20,842.80x = 28,762.44 × 11,411.04
  4. Step 4: Simplify right side
    20,842.80x = 328,209,353.34
  5. Step 5: Solve for x
    x = 328,209,353.34/20,842.80
  6. Step 6: Final answer
    x = 15,746.89

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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.