Home / 15,358.60-21,189.58-9,310.79

Finding the Fourth Proportional to 15,358.60, 21,189.58 and 9,310.79

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Solution

The fourth proportional to 15,358.60, 21,189.58 and 9,310.79 is: 12,845.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.60 : 21,189.58 = 9,310.79 : x
  2. Step 2: Convert to fraction form
    15,358.60/21,189.58 = 9,310.79/x
  3. Step 3: Cross multiply
    15,358.60x = 21,189.58 × 9,310.79
  4. Step 4: Simplify right side
    15,358.60x = 197,291,729.57
  5. Step 5: Solve for x
    x = 197,291,729.57/15,358.60
  6. Step 6: Final answer
    x = 12,845.68

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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.