Home / 10,135.57-15,203.35-7,379.78

Finding the Fourth Proportional to 10,135.57, 15,203.35 and 7,379.78

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Solution

The fourth proportional to 10,135.57, 15,203.35 and 7,379.78 is: 11,069.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.57 : 15,203.35 = 7,379.78 : x
  2. Step 2: Convert to fraction form
    10,135.57/15,203.35 = 7,379.78/x
  3. Step 3: Cross multiply
    10,135.57x = 15,203.35 × 7,379.78
  4. Step 4: Simplify right side
    10,135.57x = 112,197,368.48
  5. Step 5: Solve for x
    x = 112,197,368.48/10,135.57
  6. Step 6: Final answer
    x = 11,069.66

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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.