Home / 15,861.92-21,887.58-9,147.52

Finding the Fourth Proportional to 15,861.92, 21,887.58 and 9,147.52

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Solution

The fourth proportional to 15,861.92, 21,887.58 and 9,147.52 is: 12,622.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.92 : 21,887.58 = 9,147.52 : x
  2. Step 2: Convert to fraction form
    15,861.92/21,887.58 = 9,147.52/x
  3. Step 3: Cross multiply
    15,861.92x = 21,887.58 × 9,147.52
  4. Step 4: Simplify right side
    15,861.92x = 200,217,075.80
  5. Step 5: Solve for x
    x = 200,217,075.80/15,861.92
  6. Step 6: Final answer
    x = 12,622.50

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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.