Home / 15,434.69-21,299.87-8,361.11

Finding the Fourth Proportional to 15,434.69, 21,299.87 and 8,361.11

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Solution

The fourth proportional to 15,434.69, 21,299.87 and 8,361.11 is: 11,538.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,434.69 : 21,299.87 = 8,361.11 : x
  2. Step 2: Convert to fraction form
    15,434.69/21,299.87 = 8,361.11/x
  3. Step 3: Cross multiply
    15,434.69x = 21,299.87 × 8,361.11
  4. Step 4: Simplify right side
    15,434.69x = 178,090,567.50
  5. Step 5: Solve for x
    x = 178,090,567.50/15,434.69
  6. Step 6: Final answer
    x = 11,538.33

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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.