Home / 20,867.58-31,301.43-5,285.19

Finding the Fourth Proportional to 20,867.58, 31,301.43 and 5,285.19

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Solution

The fourth proportional to 20,867.58, 31,301.43 and 5,285.19 is: 7,927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.58 : 31,301.43 = 5,285.19 : x
  2. Step 2: Convert to fraction form
    20,867.58/31,301.43 = 5,285.19/x
  3. Step 3: Cross multiply
    20,867.58x = 31,301.43 × 5,285.19
  4. Step 4: Simplify right side
    20,867.58x = 165,434,004.82
  5. Step 5: Solve for x
    x = 165,434,004.82/20,867.58
  6. Step 6: Final answer
    x = 7,927.80

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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.