Home / 15,316.94-21,137.34-8,947.91

Finding the Fourth Proportional to 15,316.94, 21,137.34 and 8,947.91

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Solution

The fourth proportional to 15,316.94, 21,137.34 and 8,947.91 is: 12,348.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.94 : 21,137.34 = 8,947.91 : x
  2. Step 2: Convert to fraction form
    15,316.94/21,137.34 = 8,947.91/x
  3. Step 3: Cross multiply
    15,316.94x = 21,137.34 × 8,947.91
  4. Step 4: Simplify right side
    15,316.94x = 189,134,910.27
  5. Step 5: Solve for x
    x = 189,134,910.27/15,316.94
  6. Step 6: Final answer
    x = 12,348.09

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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.