Home / 12,180.65-16,756.56-9,937.58

Finding the Fourth Proportional to 12,180.65, 16,756.56 and 9,937.58

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Solution

The fourth proportional to 12,180.65, 16,756.56 and 9,937.58 is: 13,670.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.65 : 16,756.56 = 9,937.58 : x
  2. Step 2: Convert to fraction form
    12,180.65/16,756.56 = 9,937.58/x
  3. Step 3: Cross multiply
    12,180.65x = 16,756.56 × 9,937.58
  4. Step 4: Simplify right side
    12,180.65x = 166,519,571.74
  5. Step 5: Solve for x
    x = 166,519,571.74/12,180.65
  6. Step 6: Final answer
    x = 13,670.83

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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.