Home / 10,067.80-15,117.90-7,605.40

Finding the Fourth Proportional to 10,067.80, 15,117.90 and 7,605.40

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Solution

The fourth proportional to 10,067.80, 15,117.90 and 7,605.40 is: 11,420.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,067.80 : 15,117.90 = 7,605.40 : x
  2. Step 2: Convert to fraction form
    10,067.80/15,117.90 = 7,605.40/x
  3. Step 3: Cross multiply
    10,067.80x = 15,117.90 × 7,605.40
  4. Step 4: Simplify right side
    10,067.80x = 114,977,676.66
  5. Step 5: Solve for x
    x = 114,977,676.66/10,067.80
  6. Step 6: Final answer
    x = 11,420.34

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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.