Home / 20,938.05-31,411.53-6,145.83

Finding the Fourth Proportional to 20,938.05, 31,411.53 and 6,145.83

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Solution

The fourth proportional to 20,938.05, 31,411.53 and 6,145.83 is: 9,220.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.05 : 31,411.53 = 6,145.83 : x
  2. Step 2: Convert to fraction form
    20,938.05/31,411.53 = 6,145.83/x
  3. Step 3: Cross multiply
    20,938.05x = 31,411.53 × 6,145.83
  4. Step 4: Simplify right side
    20,938.05x = 193,049,923.42
  5. Step 5: Solve for x
    x = 193,049,923.42/20,938.05
  6. Step 6: Final answer
    x = 9,220.05

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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.