Home / 20,770.64-31,148.60-6,727.28

Finding the Fourth Proportional to 20,770.64, 31,148.60 and 6,727.28

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Solution

The fourth proportional to 20,770.64, 31,148.60 and 6,727.28 is: 10,088.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.64 : 31,148.60 = 6,727.28 : x
  2. Step 2: Convert to fraction form
    20,770.64/31,148.60 = 6,727.28/x
  3. Step 3: Cross multiply
    20,770.64x = 31,148.60 × 6,727.28
  4. Step 4: Simplify right side
    20,770.64x = 209,545,353.81
  5. Step 5: Solve for x
    x = 209,545,353.81/20,770.64
  6. Step 6: Final answer
    x = 10,088.54

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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.