Home / 43,285.14-64,921.19-13,699.12

Finding the Fourth Proportional to 43,285.14, 64,921.19 and 13,699.12

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Solution

The fourth proportional to 43,285.14, 64,921.19 and 13,699.12 is: 20,546.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,285.14 : 64,921.19 = 13,699.12 : x
  2. Step 2: Convert to fraction form
    43,285.14/64,921.19 = 13,699.12/x
  3. Step 3: Cross multiply
    43,285.14x = 64,921.19 × 13,699.12
  4. Step 4: Simplify right side
    43,285.14x = 889,363,172.35
  5. Step 5: Solve for x
    x = 889,363,172.35/43,285.14
  6. Step 6: Final answer
    x = 20,546.62

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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.