Home / 17,278.81-23,811.47-12,555.61

Finding the Fourth Proportional to 17,278.81, 23,811.47 and 12,555.61

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Solution

The fourth proportional to 17,278.81, 23,811.47 and 12,555.61 is: 17,302.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,278.81 : 23,811.47 = 12,555.61 : x
  2. Step 2: Convert to fraction form
    17,278.81/23,811.47 = 12,555.61/x
  3. Step 3: Cross multiply
    17,278.81x = 23,811.47 × 12,555.61
  4. Step 4: Simplify right side
    17,278.81x = 298,967,468.07
  5. Step 5: Solve for x
    x = 298,967,468.07/17,278.81
  6. Step 6: Final answer
    x = 17,302.55

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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.