Home / 20,750.05-31,117.43-7,419.45

Finding the Fourth Proportional to 20,750.05, 31,117.43 and 7,419.45

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Solution

The fourth proportional to 20,750.05, 31,117.43 and 7,419.45 is: 11,126.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.05 : 31,117.43 = 7,419.45 : x
  2. Step 2: Convert to fraction form
    20,750.05/31,117.43 = 7,419.45/x
  3. Step 3: Cross multiply
    20,750.05x = 31,117.43 × 7,419.45
  4. Step 4: Simplify right side
    20,750.05x = 230,874,216.01
  5. Step 5: Solve for x
    x = 230,874,216.01/20,750.05
  6. Step 6: Final answer
    x = 11,126.44

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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.