Home / 20,842.06-31,201.53-13,424.35

Finding the Fourth Proportional to 20,842.06, 31,201.53 and 13,424.35

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Solution

The fourth proportional to 20,842.06, 31,201.53 and 13,424.35 is: 20,096.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.06 : 31,201.53 = 13,424.35 : x
  2. Step 2: Convert to fraction form
    20,842.06/31,201.53 = 13,424.35/x
  3. Step 3: Cross multiply
    20,842.06x = 31,201.53 × 13,424.35
  4. Step 4: Simplify right side
    20,842.06x = 418,860,259.26
  5. Step 5: Solve for x
    x = 418,860,259.26/20,842.06
  6. Step 6: Final answer
    x = 20,096.87

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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.