Home / 28,712.18-43,070.10-7,651.88

Finding the Fourth Proportional to 28,712.18, 43,070.10 and 7,651.88

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Solution

The fourth proportional to 28,712.18, 43,070.10 and 7,651.88 is: 11,478.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.18 : 43,070.10 = 7,651.88 : x
  2. Step 2: Convert to fraction form
    28,712.18/43,070.10 = 7,651.88/x
  3. Step 3: Cross multiply
    28,712.18x = 43,070.10 × 7,651.88
  4. Step 4: Simplify right side
    28,712.18x = 329,567,236.79
  5. Step 5: Solve for x
    x = 329,567,236.79/28,712.18
  6. Step 6: Final answer
    x = 11,478.31

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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.