Home / 13,278.73-18,323.93-7,613.20

Finding the Fourth Proportional to 13,278.73, 18,323.93 and 7,613.20

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Solution

The fourth proportional to 13,278.73, 18,323.93 and 7,613.20 is: 10,505.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.73 : 18,323.93 = 7,613.20 : x
  2. Step 2: Convert to fraction form
    13,278.73/18,323.93 = 7,613.20/x
  3. Step 3: Cross multiply
    13,278.73x = 18,323.93 × 7,613.20
  4. Step 4: Simplify right side
    13,278.73x = 139,503,660.00
  5. Step 5: Solve for x
    x = 139,503,660.00/13,278.73
  6. Step 6: Final answer
    x = 10,505.80

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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.