Home / 20,557.96-30,839.58-7,411.72

Finding the Fourth Proportional to 20,557.96, 30,839.58 and 7,411.72

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Solution

The fourth proportional to 20,557.96, 30,839.58 and 7,411.72 is: 11,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.96 : 30,839.58 = 7,411.72 : x
  2. Step 2: Convert to fraction form
    20,557.96/30,839.58 = 7,411.72/x
  3. Step 3: Cross multiply
    20,557.96x = 30,839.58 × 7,411.72
  4. Step 4: Simplify right side
    20,557.96x = 228,574,331.88
  5. Step 5: Solve for x
    x = 228,574,331.88/20,557.96
  6. Step 6: Final answer
    x = 11,118.53

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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.