Home / 21,360.24-29,473.56-12,409.20

Finding the Fourth Proportional to 21,360.24, 29,473.56 and 12,409.20

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Solution

The fourth proportional to 21,360.24, 29,473.56 and 12,409.20 is: 17,122.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.24 : 29,473.56 = 12,409.20 : x
  2. Step 2: Convert to fraction form
    21,360.24/29,473.56 = 12,409.20/x
  3. Step 3: Cross multiply
    21,360.24x = 29,473.56 × 12,409.20
  4. Step 4: Simplify right side
    21,360.24x = 365,743,300.75
  5. Step 5: Solve for x
    x = 365,743,300.75/21,360.24
  6. Step 6: Final answer
    x = 17,122.62

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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.