Home / 21,580.60-32,362.70-8,431.26

Finding the Fourth Proportional to 21,580.60, 32,362.70 and 8,431.26

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Solution

The fourth proportional to 21,580.60, 32,362.70 and 8,431.26 is: 12,643.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580.60 : 32,362.70 = 8,431.26 : x
  2. Step 2: Convert to fraction form
    21,580.60/32,362.70 = 8,431.26/x
  3. Step 3: Cross multiply
    21,580.60x = 32,362.70 × 8,431.26
  4. Step 4: Simplify right side
    21,580.60x = 272,858,338.00
  5. Step 5: Solve for x
    x = 272,858,338.00/21,580.60
  6. Step 6: Final answer
    x = 12,643.69

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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.