Home / 20,700.13-31,051.19-5,911.20

Finding the Fourth Proportional to 20,700.13, 31,051.19 and 5,911.20

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Solution

The fourth proportional to 20,700.13, 31,051.19 and 5,911.20 is: 8,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.13 : 31,051.19 = 5,911.20 : x
  2. Step 2: Convert to fraction form
    20,700.13/31,051.19 = 5,911.20/x
  3. Step 3: Cross multiply
    20,700.13x = 31,051.19 × 5,911.20
  4. Step 4: Simplify right side
    20,700.13x = 183,549,794.33
  5. Step 5: Solve for x
    x = 183,549,794.33/20,700.13
  6. Step 6: Final answer
    x = 8,867.08

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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.