Home / 15,190.64-20,959.71-8,813.53

Finding the Fourth Proportional to 15,190.64, 20,959.71 and 8,813.53

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Solution

The fourth proportional to 15,190.64, 20,959.71 and 8,813.53 is: 12,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,190.64 : 20,959.71 = 8,813.53 : x
  2. Step 2: Convert to fraction form
    15,190.64/20,959.71 = 8,813.53/x
  3. Step 3: Cross multiply
    15,190.64x = 20,959.71 × 8,813.53
  4. Step 4: Simplify right side
    15,190.64x = 184,729,032.88
  5. Step 5: Solve for x
    x = 184,729,032.88/15,190.64
  6. Step 6: Final answer
    x = 12,160.72

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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.