Home / 12,180.64-16,811.88-7,701.52

Finding the Fourth Proportional to 12,180.64, 16,811.88 and 7,701.52

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Solution

The fourth proportional to 12,180.64, 16,811.88 and 7,701.52 is: 10,629.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.64 : 16,811.88 = 7,701.52 : x
  2. Step 2: Convert to fraction form
    12,180.64/16,811.88 = 7,701.52/x
  3. Step 3: Cross multiply
    12,180.64x = 16,811.88 × 7,701.52
  4. Step 4: Simplify right side
    12,180.64x = 129,477,030.06
  5. Step 5: Solve for x
    x = 129,477,030.06/12,180.64
  6. Step 6: Final answer
    x = 10,629.74

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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.