Home / 15,415.99-23,125.01-5,419.51

Finding the Fourth Proportional to 15,415.99, 23,125.01 and 5,419.51

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Solution

The fourth proportional to 15,415.99, 23,125.01 and 5,419.51 is: 8,129.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.99 : 23,125.01 = 5,419.51 : x
  2. Step 2: Convert to fraction form
    15,415.99/23,125.01 = 5,419.51/x
  3. Step 3: Cross multiply
    15,415.99x = 23,125.01 × 5,419.51
  4. Step 4: Simplify right side
    15,415.99x = 125,326,222.95
  5. Step 5: Solve for x
    x = 125,326,222.95/15,415.99
  6. Step 6: Final answer
    x = 8,129.63

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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.