Home / 13,431.92-18,530.88-9,903.52

Finding the Fourth Proportional to 13,431.92, 18,530.88 and 9,903.52

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Solution

The fourth proportional to 13,431.92, 18,530.88 and 9,903.52 is: 13,663.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.92 : 18,530.88 = 9,903.52 : x
  2. Step 2: Convert to fraction form
    13,431.92/18,530.88 = 9,903.52/x
  3. Step 3: Cross multiply
    13,431.92x = 18,530.88 × 9,903.52
  4. Step 4: Simplify right side
    13,431.92x = 183,520,940.70
  5. Step 5: Solve for x
    x = 183,520,940.70/13,431.92
  6. Step 6: Final answer
    x = 13,663.05

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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.