Home / 15,130.62-20,880.45-8,416.83

Finding the Fourth Proportional to 15,130.62, 20,880.45 and 8,416.83

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Solution

The fourth proportional to 15,130.62, 20,880.45 and 8,416.83 is: 11,615.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,130.62 : 20,880.45 = 8,416.83 : x
  2. Step 2: Convert to fraction form
    15,130.62/20,880.45 = 8,416.83/x
  3. Step 3: Cross multiply
    15,130.62x = 20,880.45 × 8,416.83
  4. Step 4: Simplify right side
    15,130.62x = 175,747,197.97
  5. Step 5: Solve for x
    x = 175,747,197.97/15,130.62
  6. Step 6: Final answer
    x = 11,615.33

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Double scale
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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.