Home / 13,144.85-18,140.18-7,176.77

Finding the Fourth Proportional to 13,144.85, 18,140.18 and 7,176.77

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Solution

The fourth proportional to 13,144.85, 18,140.18 and 7,176.77 is: 9,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.85 : 18,140.18 = 7,176.77 : x
  2. Step 2: Convert to fraction form
    13,144.85/18,140.18 = 7,176.77/x
  3. Step 3: Cross multiply
    13,144.85x = 18,140.18 × 7,176.77
  4. Step 4: Simplify right side
    13,144.85x = 130,187,899.62
  5. Step 5: Solve for x
    x = 130,187,899.62/13,144.85
  6. Step 6: Final answer
    x = 9,904.10

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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.