Home / 18,770.85-25,903.13-10,386.81

Finding the Fourth Proportional to 18,770.85, 25,903.13 and 10,386.81

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Solution

The fourth proportional to 18,770.85, 25,903.13 and 10,386.81 is: 14,333.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.85 : 25,903.13 = 10,386.81 : x
  2. Step 2: Convert to fraction form
    18,770.85/25,903.13 = 10,386.81/x
  3. Step 3: Cross multiply
    18,770.85x = 25,903.13 × 10,386.81
  4. Step 4: Simplify right side
    18,770.85x = 269,050,837.78
  5. Step 5: Solve for x
    x = 269,050,837.78/18,770.85
  6. Step 6: Final answer
    x = 14,333.44

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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.