Home / 13,790.15-20,670.42-5,458.59

Finding the Fourth Proportional to 13,790.15, 20,670.42 and 5,458.59

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Solution

The fourth proportional to 13,790.15, 20,670.42 and 5,458.59 is: 8,182.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.15 : 20,670.42 = 5,458.59 : x
  2. Step 2: Convert to fraction form
    13,790.15/20,670.42 = 5,458.59/x
  3. Step 3: Cross multiply
    13,790.15x = 20,670.42 × 5,458.59
  4. Step 4: Simplify right side
    13,790.15x = 112,831,347.91
  5. Step 5: Solve for x
    x = 112,831,347.91/13,790.15
  6. Step 6: Final answer
    x = 8,182.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.