Home / 15,549.28-21,343.20-13,833.10

Finding the Fourth Proportional to 15,549.28, 21,343.20 and 13,833.10

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Solution

The fourth proportional to 15,549.28, 21,343.20 and 13,833.10 is: 18,987.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.28 : 21,343.20 = 13,833.10 : x
  2. Step 2: Convert to fraction form
    15,549.28/21,343.20 = 13,833.10/x
  3. Step 3: Cross multiply
    15,549.28x = 21,343.20 × 13,833.10
  4. Step 4: Simplify right side
    15,549.28x = 295,242,619.92
  5. Step 5: Solve for x
    x = 295,242,619.92/15,549.28
  6. Step 6: Final answer
    x = 18,987.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.