Home / 13,103.20-18,083.90-7,798.02

Finding the Fourth Proportional to 13,103.20, 18,083.90 and 7,798.02

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Solution

The fourth proportional to 13,103.20, 18,083.90 and 7,798.02 is: 10,762.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.20 : 18,083.90 = 7,798.02 : x
  2. Step 2: Convert to fraction form
    13,103.20/18,083.90 = 7,798.02/x
  3. Step 3: Cross multiply
    13,103.20x = 18,083.90 × 7,798.02
  4. Step 4: Simplify right side
    13,103.20x = 141,018,613.88
  5. Step 5: Solve for x
    x = 141,018,613.88/13,103.20
  6. Step 6: Final answer
    x = 10,762.15

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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.