Home / 15,431.16-23,147.82-7,637.88

Finding the Fourth Proportional to 15,431.16, 23,147.82 and 7,637.88

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Solution

The fourth proportional to 15,431.16, 23,147.82 and 7,637.88 is: 11,457.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.16 : 23,147.82 = 7,637.88 : x
  2. Step 2: Convert to fraction form
    15,431.16/23,147.82 = 7,637.88/x
  3. Step 3: Cross multiply
    15,431.16x = 23,147.82 × 7,637.88
  4. Step 4: Simplify right side
    15,431.16x = 176,800,271.42
  5. Step 5: Solve for x
    x = 176,800,271.42/15,431.16
  6. Step 6: Final answer
    x = 11,457.35

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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.