Home / 18,579.36-25,639.02-11,308.74

Finding the Fourth Proportional to 18,579.36, 25,639.02 and 11,308.74

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Solution

The fourth proportional to 18,579.36, 25,639.02 and 11,308.74 is: 15,605.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.36 : 25,639.02 = 11,308.74 : x
  2. Step 2: Convert to fraction form
    18,579.36/25,639.02 = 11,308.74/x
  3. Step 3: Cross multiply
    18,579.36x = 25,639.02 × 11,308.74
  4. Step 4: Simplify right side
    18,579.36x = 289,945,011.03
  5. Step 5: Solve for x
    x = 289,945,011.03/18,579.36
  6. Step 6: Final answer
    x = 15,605.76

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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.