Home / 18,859.20-28,292.91-5,712.60

Finding the Fourth Proportional to 18,859.20, 28,292.91 and 5,712.60

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Solution

The fourth proportional to 18,859.20, 28,292.91 and 5,712.60 is: 8,570.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.20 : 28,292.91 = 5,712.60 : x
  2. Step 2: Convert to fraction form
    18,859.20/28,292.91 = 5,712.60/x
  3. Step 3: Cross multiply
    18,859.20x = 28,292.91 × 5,712.60
  4. Step 4: Simplify right side
    18,859.20x = 161,626,077.67
  5. Step 5: Solve for x
    x = 161,626,077.67/18,859.20
  6. Step 6: Final answer
    x = 8,570.14

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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.