Home / 28,931.10-43,385.85-11,397.30

Finding the Fourth Proportional to 28,931.10, 43,385.85 and 11,397.30

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Solution

The fourth proportional to 28,931.10, 43,385.85 and 11,397.30 is: 17,091.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.10 : 43,385.85 = 11,397.30 : x
  2. Step 2: Convert to fraction form
    28,931.10/43,385.85 = 11,397.30/x
  3. Step 3: Cross multiply
    28,931.10x = 43,385.85 × 11,397.30
  4. Step 4: Simplify right side
    28,931.10x = 494,481,548.21
  5. Step 5: Solve for x
    x = 494,481,548.21/28,931.10
  6. Step 6: Final answer
    x = 17,091.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.