Home / 20,782.04-28,675.89-11,829.71

Finding the Fourth Proportional to 20,782.04, 28,675.89 and 11,829.71

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Solution

The fourth proportional to 20,782.04, 28,675.89 and 11,829.71 is: 16,323.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.04 : 28,675.89 = 11,829.71 : x
  2. Step 2: Convert to fraction form
    20,782.04/28,675.89 = 11,829.71/x
  3. Step 3: Cross multiply
    20,782.04x = 28,675.89 × 11,829.71
  4. Step 4: Simplify right side
    20,782.04x = 339,227,534.38
  5. Step 5: Solve for x
    x = 339,227,534.38/20,782.04
  6. Step 6: Final answer
    x = 16,323.11

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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.