Home / 15,742.78-23,615.90-5,208.96

Finding the Fourth Proportional to 15,742.78, 23,615.90 and 5,208.96

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Solution

The fourth proportional to 15,742.78, 23,615.90 and 5,208.96 is: 7,814.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.78 : 23,615.90 = 5,208.96 : x
  2. Step 2: Convert to fraction form
    15,742.78/23,615.90 = 5,208.96/x
  3. Step 3: Cross multiply
    15,742.78x = 23,615.90 × 5,208.96
  4. Step 4: Simplify right side
    15,742.78x = 123,014,278.46
  5. Step 5: Solve for x
    x = 123,014,278.46/15,742.78
  6. Step 6: Final answer
    x = 7,814.01

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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.