Home / 28,516.21-39,333.83-18,291.06

Finding the Fourth Proportional to 28,516.21, 39,333.83 and 18,291.06

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Solution

The fourth proportional to 28,516.21, 39,333.83 and 18,291.06 is: 25,229.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.21 : 39,333.83 = 18,291.06 : x
  2. Step 2: Convert to fraction form
    28,516.21/39,333.83 = 18,291.06/x
  3. Step 3: Cross multiply
    28,516.21x = 39,333.83 × 18,291.06
  4. Step 4: Simplify right side
    28,516.21x = 719,457,490.29
  5. Step 5: Solve for x
    x = 719,457,490.29/28,516.21
  6. Step 6: Final answer
    x = 25,229.77

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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.