Home / 18,155.52-25,047.36-11,439.36

Finding the Fourth Proportional to 18,155.52, 25,047.36 and 11,439.36

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Solution

The fourth proportional to 18,155.52, 25,047.36 and 11,439.36 is: 15,781.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.52 : 25,047.36 = 11,439.36 : x
  2. Step 2: Convert to fraction form
    18,155.52/25,047.36 = 11,439.36/x
  3. Step 3: Cross multiply
    18,155.52x = 25,047.36 × 11,439.36
  4. Step 4: Simplify right side
    18,155.52x = 286,525,768.09
  5. Step 5: Solve for x
    x = 286,525,768.09/18,155.52
  6. Step 6: Final answer
    x = 15,781.74

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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.