Home / 28,520.55-39,358.32-17,190.20

Finding the Fourth Proportional to 28,520.55, 39,358.32 and 17,190.20

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Solution

The fourth proportional to 28,520.55, 39,358.32 and 17,190.20 is: 23,722.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.55 : 39,358.32 = 17,190.20 : x
  2. Step 2: Convert to fraction form
    28,520.55/39,358.32 = 17,190.20/x
  3. Step 3: Cross multiply
    28,520.55x = 39,358.32 × 17,190.20
  4. Step 4: Simplify right side
    28,520.55x = 676,577,195.67
  5. Step 5: Solve for x
    x = 676,577,195.67/28,520.55
  6. Step 6: Final answer
    x = 23,722.45

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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.