Home / 15,311.70-21,133.44-9,342.09

Finding the Fourth Proportional to 15,311.70, 21,133.44 and 9,342.09

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Solution

The fourth proportional to 15,311.70, 21,133.44 and 9,342.09 is: 12,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.70 : 21,133.44 = 9,342.09 : x
  2. Step 2: Convert to fraction form
    15,311.70/21,133.44 = 9,342.09/x
  3. Step 3: Cross multiply
    15,311.70x = 21,133.44 × 9,342.09
  4. Step 4: Simplify right side
    15,311.70x = 197,430,498.49
  5. Step 5: Solve for x
    x = 197,430,498.49/15,311.70
  6. Step 6: Final answer
    x = 12,894.09

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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.