Home / 20,900.04-31,354.92-6,109.08

Finding the Fourth Proportional to 20,900.04, 31,354.92 and 6,109.08

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Solution

The fourth proportional to 20,900.04, 31,354.92 and 6,109.08 is: 9,165.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.04 : 31,354.92 = 6,109.08 : x
  2. Step 2: Convert to fraction form
    20,900.04/31,354.92 = 6,109.08/x
  3. Step 3: Cross multiply
    20,900.04x = 31,354.92 × 6,109.08
  4. Step 4: Simplify right side
    20,900.04x = 191,549,714.67
  5. Step 5: Solve for x
    x = 191,549,714.67/20,900.04
  6. Step 6: Final answer
    x = 9,165.04

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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.