Home / 15,415.21-23,122.97-5,420.23

Finding the Fourth Proportional to 15,415.21, 23,122.97 and 5,420.23

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Solution

The fourth proportional to 15,415.21, 23,122.97 and 5,420.23 is: 8,130.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.21 : 23,122.97 = 5,420.23 : x
  2. Step 2: Convert to fraction form
    15,415.21/23,122.97 = 5,420.23/x
  3. Step 3: Cross multiply
    15,415.21x = 23,122.97 × 5,420.23
  4. Step 4: Simplify right side
    15,415.21x = 125,331,815.68
  5. Step 5: Solve for x
    x = 125,331,815.68/15,415.21
  6. Step 6: Final answer
    x = 8,130.40

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1.5x scale

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.