Home / 20,170.10-30,261.31-10,316.30

Finding the Fourth Proportional to 20,170.10, 30,261.31 and 10,316.30

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Solution

The fourth proportional to 20,170.10, 30,261.31 and 10,316.30 is: 15,477.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.10 : 30,261.31 = 10,316.30 : x
  2. Step 2: Convert to fraction form
    20,170.10/30,261.31 = 10,316.30/x
  3. Step 3: Cross multiply
    20,170.10x = 30,261.31 × 10,316.30
  4. Step 4: Simplify right side
    20,170.10x = 312,184,752.35
  5. Step 5: Solve for x
    x = 312,184,752.35/20,170.10
  6. Step 6: Final answer
    x = 15,477.60

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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.