Home / 14,428.06-19,910.55-8,140.30

Finding the Fourth Proportional to 14,428.06, 19,910.55 and 8,140.30

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Solution

The fourth proportional to 14,428.06, 19,910.55 and 8,140.30 is: 11,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.06 : 19,910.55 = 8,140.30 : x
  2. Step 2: Convert to fraction form
    14,428.06/19,910.55 = 8,140.30/x
  3. Step 3: Cross multiply
    14,428.06x = 19,910.55 × 8,140.30
  4. Step 4: Simplify right side
    14,428.06x = 162,077,850.17
  5. Step 5: Solve for x
    x = 162,077,850.17/14,428.06
  6. Step 6: Final answer
    x = 11,233.52

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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.