Home / 20,402.08-28,157.96-12,448.92

Finding the Fourth Proportional to 20,402.08, 28,157.96 and 12,448.92

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Solution

The fourth proportional to 20,402.08, 28,157.96 and 12,448.92 is: 17,181.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.08 : 28,157.96 = 12,448.92 : x
  2. Step 2: Convert to fraction form
    20,402.08/28,157.96 = 12,448.92/x
  3. Step 3: Cross multiply
    20,402.08x = 28,157.96 × 12,448.92
  4. Step 4: Simplify right side
    20,402.08x = 350,536,328.12
  5. Step 5: Solve for x
    x = 350,536,328.12/20,402.08
  6. Step 6: Final answer
    x = 17,181.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.