Home / 14,090.45-19,440.40-8,121.30

Finding the Fourth Proportional to 14,090.45, 19,440.40 and 8,121.30

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Solution

The fourth proportional to 14,090.45, 19,440.40 and 8,121.30 is: 11,204.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,090.45 : 19,440.40 = 8,121.30 : x
  2. Step 2: Convert to fraction form
    14,090.45/19,440.40 = 8,121.30/x
  3. Step 3: Cross multiply
    14,090.45x = 19,440.40 × 8,121.30
  4. Step 4: Simplify right side
    14,090.45x = 157,881,320.52
  5. Step 5: Solve for x
    x = 157,881,320.52/14,090.45
  6. Step 6: Final answer
    x = 11,204.85

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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.