Home / 42,650.40-63,975.60-13,072.80

Finding the Fourth Proportional to 42,650.40, 63,975.60 and 13,072.80

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Solution

The fourth proportional to 42,650.40, 63,975.60 and 13,072.80 is: 19,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,650.40 : 63,975.60 = 13,072.80 : x
  2. Step 2: Convert to fraction form
    42,650.40/63,975.60 = 13,072.80/x
  3. Step 3: Cross multiply
    42,650.40x = 63,975.60 × 13,072.80
  4. Step 4: Simplify right side
    42,650.40x = 836,340,223.68
  5. Step 5: Solve for x
    x = 836,340,223.68/42,650.40
  6. Step 6: Final answer
    x = 19,609.20

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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.