Home / 20,496.04-28,283.76-11,421.19

Finding the Fourth Proportional to 20,496.04, 28,283.76 and 11,421.19

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Solution

The fourth proportional to 20,496.04, 28,283.76 and 11,421.19 is: 15,760.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,496.04 : 28,283.76 = 11,421.19 : x
  2. Step 2: Convert to fraction form
    20,496.04/28,283.76 = 11,421.19/x
  3. Step 3: Cross multiply
    20,496.04x = 28,283.76 × 11,421.19
  4. Step 4: Simplify right side
    20,496.04x = 323,034,196.87
  5. Step 5: Solve for x
    x = 323,034,196.87/20,496.04
  6. Step 6: Final answer
    x = 15,760.81

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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.