Home / 18,343.81-25,313.97-10,386.79

Finding the Fourth Proportional to 18,343.81, 25,313.97 and 10,386.79

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Solution

The fourth proportional to 18,343.81, 25,313.97 and 10,386.79 is: 14,333.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.81 : 25,313.97 = 10,386.79 : x
  2. Step 2: Convert to fraction form
    18,343.81/25,313.97 = 10,386.79/x
  3. Step 3: Cross multiply
    18,343.81x = 25,313.97 × 10,386.79
  4. Step 4: Simplify right side
    18,343.81x = 262,930,890.46
  5. Step 5: Solve for x
    x = 262,930,890.46/18,343.81
  6. Step 6: Final answer
    x = 14,333.49

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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.