Home / 12,530.16-18,786.60-5,132.40

Finding the Fourth Proportional to 12,530.16, 18,786.60 and 5,132.40

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Solution

The fourth proportional to 12,530.16, 18,786.60 and 5,132.40 is: 7,695.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,530.16 : 18,786.60 = 5,132.40 : x
  2. Step 2: Convert to fraction form
    12,530.16/18,786.60 = 5,132.40/x
  3. Step 3: Cross multiply
    12,530.16x = 18,786.60 × 5,132.40
  4. Step 4: Simplify right side
    12,530.16x = 96,420,345.84
  5. Step 5: Solve for x
    x = 96,420,345.84/12,530.16
  6. Step 6: Final answer
    x = 7,695.06

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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.