Home / 21,182.04-29,236.96-13,219.56

Finding the Fourth Proportional to 21,182.04, 29,236.96 and 13,219.56

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Solution

The fourth proportional to 21,182.04, 29,236.96 and 13,219.56 is: 18,246.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.04 : 29,236.96 = 13,219.56 : x
  2. Step 2: Convert to fraction form
    21,182.04/29,236.96 = 13,219.56/x
  3. Step 3: Cross multiply
    21,182.04x = 29,236.96 × 13,219.56
  4. Step 4: Simplify right side
    21,182.04x = 386,499,746.94
  5. Step 5: Solve for x
    x = 386,499,746.94/21,182.04
  6. Step 6: Final answer
    x = 18,246.58

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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.