Home / 20,638.96-30,962.88-6,407.16

Finding the Fourth Proportional to 20,638.96, 30,962.88 and 6,407.16

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Solution

The fourth proportional to 20,638.96, 30,962.88 and 6,407.16 is: 9,612.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.96 : 30,962.88 = 6,407.16 : x
  2. Step 2: Convert to fraction form
    20,638.96/30,962.88 = 6,407.16/x
  3. Step 3: Cross multiply
    20,638.96x = 30,962.88 × 6,407.16
  4. Step 4: Simplify right side
    20,638.96x = 198,384,126.22
  5. Step 5: Solve for x
    x = 198,384,126.22/20,638.96
  6. Step 6: Final answer
    x = 9,612.12

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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.