Home / 19,419.45-29,129.18-8,889.45

Finding the Fourth Proportional to 19,419.45, 29,129.18 and 8,889.45

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Solution

The fourth proportional to 19,419.45, 29,129.18 and 8,889.45 is: 13,334.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.45 : 29,129.18 = 8,889.45 : x
  2. Step 2: Convert to fraction form
    19,419.45/29,129.18 = 8,889.45/x
  3. Step 3: Cross multiply
    19,419.45x = 29,129.18 × 8,889.45
  4. Step 4: Simplify right side
    19,419.45x = 258,942,344.70
  5. Step 5: Solve for x
    x = 258,942,344.70/19,419.45
  6. Step 6: Final answer
    x = 13,334.18

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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.