Home / 20,730.76-28,609.01-11,299.93

Finding the Fourth Proportional to 20,730.76, 28,609.01 and 11,299.93

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Solution

The fourth proportional to 20,730.76, 28,609.01 and 11,299.93 is: 15,594.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.76 : 28,609.01 = 11,299.93 : x
  2. Step 2: Convert to fraction form
    20,730.76/28,609.01 = 11,299.93/x
  3. Step 3: Cross multiply
    20,730.76x = 28,609.01 × 11,299.93
  4. Step 4: Simplify right side
    20,730.76x = 323,279,810.37
  5. Step 5: Solve for x
    x = 323,279,810.37/20,730.76
  6. Step 6: Final answer
    x = 15,594.21

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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.