Home / 20,485.24-28,270.20-12,527.32

Finding the Fourth Proportional to 20,485.24, 28,270.20 and 12,527.32

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Solution

The fourth proportional to 20,485.24, 28,270.20 and 12,527.32 is: 17,288.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.24 : 28,270.20 = 12,527.32 : x
  2. Step 2: Convert to fraction form
    20,485.24/28,270.20 = 12,527.32/x
  3. Step 3: Cross multiply
    20,485.24x = 28,270.20 × 12,527.32
  4. Step 4: Simplify right side
    20,485.24x = 354,149,841.86
  5. Step 5: Solve for x
    x = 354,149,841.86/20,485.24
  6. Step 6: Final answer
    x = 17,288.05

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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.