Home / 42,270.80-63,401.40-11,109.20

Finding the Fourth Proportional to 42,270.80, 63,401.40 and 11,109.20

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Solution

The fourth proportional to 42,270.80, 63,401.40 and 11,109.20 is: 16,662.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,270.80 : 63,401.40 = 11,109.20 : x
  2. Step 2: Convert to fraction form
    42,270.80/63,401.40 = 11,109.20/x
  3. Step 3: Cross multiply
    42,270.80x = 63,401.40 × 11,109.20
  4. Step 4: Simplify right side
    42,270.80x = 704,338,832.88
  5. Step 5: Solve for x
    x = 704,338,832.88/42,270.80
  6. Step 6: Final answer
    x = 16,662.54

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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.