Home / 19,419.75-29,139.35-8,889.75

Finding the Fourth Proportional to 19,419.75, 29,139.35 and 8,889.75

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Solution

The fourth proportional to 19,419.75, 29,139.35 and 8,889.75 is: 13,339.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.75 : 29,139.35 = 8,889.75 : x
  2. Step 2: Convert to fraction form
    19,419.75/29,139.35 = 8,889.75/x
  3. Step 3: Cross multiply
    19,419.75x = 29,139.35 × 8,889.75
  4. Step 4: Simplify right side
    19,419.75x = 259,041,492.21
  5. Step 5: Solve for x
    x = 259,041,492.21/19,419.75
  6. Step 6: Final answer
    x = 13,339.07

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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.