Home / 15,557.10-21,468.78-9,183.70

Finding the Fourth Proportional to 15,557.10, 21,468.78 and 9,183.70

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Solution

The fourth proportional to 15,557.10, 21,468.78 and 9,183.70 is: 12,673.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,557.10 : 21,468.78 = 9,183.70 : x
  2. Step 2: Convert to fraction form
    15,557.10/21,468.78 = 9,183.70/x
  3. Step 3: Cross multiply
    15,557.10x = 21,468.78 × 9,183.70
  4. Step 4: Simplify right side
    15,557.10x = 197,162,834.89
  5. Step 5: Solve for x
    x = 197,162,834.89/15,557.10
  6. Step 6: Final answer
    x = 12,673.50

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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.