Home / 15,890.99-21,930.60-9,176.90

Finding the Fourth Proportional to 15,890.99, 21,930.60 and 9,176.90

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Solution

The fourth proportional to 15,890.99, 21,930.60 and 9,176.90 is: 12,664.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.99 : 21,930.60 = 9,176.90 : x
  2. Step 2: Convert to fraction form
    15,890.99/21,930.60 = 9,176.90/x
  3. Step 3: Cross multiply
    15,890.99x = 21,930.60 × 9,176.90
  4. Step 4: Simplify right side
    15,890.99x = 201,254,847.90
  5. Step 5: Solve for x
    x = 201,254,847.90/15,890.99
  6. Step 6: Final answer
    x = 12,664.72

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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.