Home / 13,535.36-18,681.81-8,229.05

Finding the Fourth Proportional to 13,535.36, 18,681.81 and 8,229.05

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Solution

The fourth proportional to 13,535.36, 18,681.81 and 8,229.05 is: 11,357.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,535.36 : 18,681.81 = 8,229.05 : x
  2. Step 2: Convert to fraction form
    13,535.36/18,681.81 = 8,229.05/x
  3. Step 3: Cross multiply
    13,535.36x = 18,681.81 × 8,229.05
  4. Step 4: Simplify right side
    13,535.36x = 153,733,548.58
  5. Step 5: Solve for x
    x = 153,733,548.58/13,535.36
  6. Step 6: Final answer
    x = 11,357.92

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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.