Home / 15,434.30-21,299.34-8,360.70

Finding the Fourth Proportional to 15,434.30, 21,299.34 and 8,360.70

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Solution

The fourth proportional to 15,434.30, 21,299.34 and 8,360.70 is: 11,537.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,434.30 : 21,299.34 = 8,360.70 : x
  2. Step 2: Convert to fraction form
    15,434.30/21,299.34 = 8,360.70/x
  3. Step 3: Cross multiply
    15,434.30x = 21,299.34 × 8,360.70
  4. Step 4: Simplify right side
    15,434.30x = 178,077,391.94
  5. Step 5: Solve for x
    x = 178,077,391.94/15,434.30
  6. Step 6: Final answer
    x = 11,537.77

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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.