Home / 13,931.30-19,225.12-8,268.86

Finding the Fourth Proportional to 13,931.30, 19,225.12 and 8,268.86

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Solution

The fourth proportional to 13,931.30, 19,225.12 and 8,268.86 is: 11,410.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.30 : 19,225.12 = 8,268.86 : x
  2. Step 2: Convert to fraction form
    13,931.30/19,225.12 = 8,268.86/x
  3. Step 3: Cross multiply
    13,931.30x = 19,225.12 × 8,268.86
  4. Step 4: Simplify right side
    13,931.30x = 158,969,825.76
  5. Step 5: Solve for x
    x = 158,969,825.76/13,931.30
  6. Step 6: Final answer
    x = 11,410.98

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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.