Home / 30,231.36-45,322.56-13,579.20

Finding the Fourth Proportional to 30,231.36, 45,322.56 and 13,579.20

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Solution

The fourth proportional to 30,231.36, 45,322.56 and 13,579.20 is: 20,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,231.36 : 45,322.56 = 13,579.20 : x
  2. Step 2: Convert to fraction form
    30,231.36/45,322.56 = 13,579.20/x
  3. Step 3: Cross multiply
    30,231.36x = 45,322.56 × 13,579.20
  4. Step 4: Simplify right side
    30,231.36x = 615,444,106.75
  5. Step 5: Solve for x
    x = 615,444,106.75/30,231.36
  6. Step 6: Final answer
    x = 20,357.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.