Home / 12,431.79-17,148.33-7,953.96

Finding the Fourth Proportional to 12,431.79, 17,148.33 and 7,953.96

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Solution

The fourth proportional to 12,431.79, 17,148.33 and 7,953.96 is: 10,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.79 : 17,148.33 = 7,953.96 : x
  2. Step 2: Convert to fraction form
    12,431.79/17,148.33 = 7,953.96/x
  3. Step 3: Cross multiply
    12,431.79x = 17,148.33 × 7,953.96
  4. Step 4: Simplify right side
    12,431.79x = 136,397,130.89
  5. Step 5: Solve for x
    x = 136,397,130.89/12,431.79
  6. Step 6: Final answer
    x = 10,971.64

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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.