Home / 20,673.83-28,529.74-11,242.40

Finding the Fourth Proportional to 20,673.83, 28,529.74 and 11,242.40

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Solution

The fourth proportional to 20,673.83, 28,529.74 and 11,242.40 is: 15,514.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.83 : 28,529.74 = 11,242.40 : x
  2. Step 2: Convert to fraction form
    20,673.83/28,529.74 = 11,242.40/x
  3. Step 3: Cross multiply
    20,673.83x = 28,529.74 × 11,242.40
  4. Step 4: Simplify right side
    20,673.83x = 320,742,748.98
  5. Step 5: Solve for x
    x = 320,742,748.98/20,673.83
  6. Step 6: Final answer
    x = 15,514.43

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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.