Home / 13,635.03-18,814.35-7,970.31

Finding the Fourth Proportional to 13,635.03, 18,814.35 and 7,970.31

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Solution

The fourth proportional to 13,635.03, 18,814.35 and 7,970.31 is: 10,997.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.03 : 18,814.35 = 7,970.31 : x
  2. Step 2: Convert to fraction form
    13,635.03/18,814.35 = 7,970.31/x
  3. Step 3: Cross multiply
    13,635.03x = 18,814.35 × 7,970.31
  4. Step 4: Simplify right side
    13,635.03x = 149,956,201.95
  5. Step 5: Solve for x
    x = 149,956,201.95/13,635.03
  6. Step 6: Final answer
    x = 10,997.86

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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.