Home / 30,877.03-42,576.46-20,102.02

Finding the Fourth Proportional to 30,877.03, 42,576.46 and 20,102.02

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Solution

The fourth proportional to 30,877.03, 42,576.46 and 20,102.02 is: 27,718.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,877.03 : 42,576.46 = 20,102.02 : x
  2. Step 2: Convert to fraction form
    30,877.03/42,576.46 = 20,102.02/x
  3. Step 3: Cross multiply
    30,877.03x = 42,576.46 × 20,102.02
  4. Step 4: Simplify right side
    30,877.03x = 855,872,850.45
  5. Step 5: Solve for x
    x = 855,872,850.45/30,877.03
  6. Step 6: Final answer
    x = 27,718.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.