Home / 20,808.16-31,170.96-9,699.55

Finding the Fourth Proportional to 20,808.16, 31,170.96 and 9,699.55

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Solution

The fourth proportional to 20,808.16, 31,170.96 and 9,699.55 is: 14,530.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.16 : 31,170.96 = 9,699.55 : x
  2. Step 2: Convert to fraction form
    20,808.16/31,170.96 = 9,699.55/x
  3. Step 3: Cross multiply
    20,808.16x = 31,170.96 × 9,699.55
  4. Step 4: Simplify right side
    20,808.16x = 302,344,207.14
  5. Step 5: Solve for x
    x = 302,344,207.14/20,808.16
  6. Step 6: Final answer
    x = 14,530.08

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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.