Home / 20,350.56-30,507.60-8,657.40

Finding the Fourth Proportional to 20,350.56, 30,507.60 and 8,657.40

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Solution

The fourth proportional to 20,350.56, 30,507.60 and 8,657.40 is: 12,978.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.56 : 30,507.60 = 8,657.40 : x
  2. Step 2: Convert to fraction form
    20,350.56/30,507.60 = 8,657.40/x
  3. Step 3: Cross multiply
    20,350.56x = 30,507.60 × 8,657.40
  4. Step 4: Simplify right side
    20,350.56x = 264,116,496.24
  5. Step 5: Solve for x
    x = 264,116,496.24/20,350.56
  6. Step 6: Final answer
    x = 12,978.34

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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.