Home / 20,342.08-30,514.20-6,490

Finding the Fourth Proportional to 20,342.08, 30,514.20 and 6,490

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Solution

The fourth proportional to 20,342.08, 30,514.20 and 6,490 is: 9,735.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.08 : 30,514.20 = 6,490 : x
  2. Step 2: Convert to fraction form
    20,342.08/30,514.20 = 6,490/x
  3. Step 3: Cross multiply
    20,342.08x = 30,514.20 × 6,490
  4. Step 4: Simplify right side
    20,342.08x = 198,037,158
  5. Step 5: Solve for x
    x = 198,037,158/20,342.08
  6. Step 6: Final answer
    x = 9,735.34

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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.