Home / 13,144.86-18,139.95-7,176.85

Finding the Fourth Proportional to 13,144.86, 18,139.95 and 7,176.85

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Solution

The fourth proportional to 13,144.86, 18,139.95 and 7,176.85 is: 9,904.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.86 : 18,139.95 = 7,176.85 : x
  2. Step 2: Convert to fraction form
    13,144.86/18,139.95 = 7,176.85/x
  3. Step 3: Cross multiply
    13,144.86x = 18,139.95 × 7,176.85
  4. Step 4: Simplify right side
    13,144.86x = 130,187,756.84
  5. Step 5: Solve for x
    x = 130,187,756.84/13,144.86
  6. Step 6: Final answer
    x = 9,904.08

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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.