Home / 20,742.90-31,095.64-14,081.64

Finding the Fourth Proportional to 20,742.90, 31,095.64 and 14,081.64

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Solution

The fourth proportional to 20,742.90, 31,095.64 and 14,081.64 is: 21,109.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.90 : 31,095.64 = 14,081.64 : x
  2. Step 2: Convert to fraction form
    20,742.90/31,095.64 = 14,081.64/x
  3. Step 3: Cross multiply
    20,742.90x = 31,095.64 × 14,081.64
  4. Step 4: Simplify right side
    20,742.90x = 437,877,608.05
  5. Step 5: Solve for x
    x = 437,877,608.05/20,742.90
  6. Step 6: Final answer
    x = 21,109.76

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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.