Home / 13,390.38-20,048.36-6,784.12

Finding the Fourth Proportional to 13,390.38, 20,048.36 and 6,784.12

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Solution

The fourth proportional to 13,390.38, 20,048.36 and 6,784.12 is: 10,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.38 : 20,048.36 = 6,784.12 : x
  2. Step 2: Convert to fraction form
    13,390.38/20,048.36 = 6,784.12/x
  3. Step 3: Cross multiply
    13,390.38x = 20,048.36 × 6,784.12
  4. Step 4: Simplify right side
    13,390.38x = 136,010,509.34
  5. Step 5: Solve for x
    x = 136,010,509.34/13,390.38
  6. Step 6: Final answer
    x = 10,157.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.