Home / 18,344.81-25,315.35-10,387.79

Finding the Fourth Proportional to 18,344.81, 25,315.35 and 10,387.79

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Solution

The fourth proportional to 18,344.81, 25,315.35 and 10,387.79 is: 14,334.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,344.81 : 25,315.35 = 10,387.79 : x
  2. Step 2: Convert to fraction form
    18,344.81/25,315.35 = 10,387.79/x
  3. Step 3: Cross multiply
    18,344.81x = 25,315.35 × 10,387.79
  4. Step 4: Simplify right side
    18,344.81x = 262,970,539.58
  5. Step 5: Solve for x
    x = 262,970,539.58/18,344.81
  6. Step 6: Final answer
    x = 14,334.87

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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.