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Finding the Fourth Proportional to 35,443.56, 53,128.82 and 15,731.40

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Solution

The fourth proportional to 35,443.56, 53,128.82 and 15,731.40 is: 23,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,443.56 : 53,128.82 = 15,731.40 : x
  2. Step 2: Convert to fraction form
    35,443.56/53,128.82 = 15,731.40/x
  3. Step 3: Cross multiply
    35,443.56x = 53,128.82 × 15,731.40
  4. Step 4: Simplify right side
    35,443.56x = 835,790,718.95
  5. Step 5: Solve for x
    x = 835,790,718.95/35,443.56
  6. Step 6: Final answer
    x = 23,580.89

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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.