Home / 12,821.64-17,693.16-7,232.28

Finding the Fourth Proportional to 12,821.64, 17,693.16 and 7,232.28

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Solution

The fourth proportional to 12,821.64, 17,693.16 and 7,232.28 is: 9,980.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.64 : 17,693.16 = 7,232.28 : x
  2. Step 2: Convert to fraction form
    12,821.64/17,693.16 = 7,232.28/x
  3. Step 3: Cross multiply
    12,821.64x = 17,693.16 × 7,232.28
  4. Step 4: Simplify right side
    12,821.64x = 127,961,887.20
  5. Step 5: Solve for x
    x = 127,961,887.20/12,821.64
  6. Step 6: Final answer
    x = 9,980.15

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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.