Home / 9,369.45-12,929.85-5,120.55

Finding the Fourth Proportional to 9,369.45, 12,929.85 and 5,120.55

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Solution

The fourth proportional to 9,369.45, 12,929.85 and 5,120.55 is: 7,066.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.45 : 12,929.85 = 5,120.55 : x
  2. Step 2: Convert to fraction form
    9,369.45/12,929.85 = 5,120.55/x
  3. Step 3: Cross multiply
    9,369.45x = 12,929.85 × 5,120.55
  4. Step 4: Simplify right side
    9,369.45x = 66,207,943.42
  5. Step 5: Solve for x
    x = 66,207,943.42/9,369.45
  6. Step 6: Final answer
    x = 7,066.36

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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.