Home / 12,821.56-17,693.70-7,232.52

Finding the Fourth Proportional to 12,821.56, 17,693.70 and 7,232.52

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Solution

The fourth proportional to 12,821.56, 17,693.70 and 7,232.52 is: 9,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.56 : 17,693.70 = 7,232.52 : x
  2. Step 2: Convert to fraction form
    12,821.56/17,693.70 = 7,232.52/x
  3. Step 3: Cross multiply
    12,821.56x = 17,693.70 × 7,232.52
  4. Step 4: Simplify right side
    12,821.56x = 127,970,039.12
  5. Step 5: Solve for x
    x = 127,970,039.12/12,821.56
  6. Step 6: Final answer
    x = 9,980.85

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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.