Home / 15,318.06-21,138.21-9,029.22

Finding the Fourth Proportional to 15,318.06, 21,138.21 and 9,029.22

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Solution

The fourth proportional to 15,318.06, 21,138.21 and 9,029.22 is: 12,459.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.06 : 21,138.21 = 9,029.22 : x
  2. Step 2: Convert to fraction form
    15,318.06/21,138.21 = 9,029.22/x
  3. Step 3: Cross multiply
    15,318.06x = 21,138.21 × 9,029.22
  4. Step 4: Simplify right side
    15,318.06x = 190,861,548.50
  5. Step 5: Solve for x
    x = 190,861,548.50/15,318.06
  6. Step 6: Final answer
    x = 12,459.90

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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.