Home / 15,423.45-21,284.34-8,349.87

Finding the Fourth Proportional to 15,423.45, 21,284.34 and 8,349.87

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Solution

The fourth proportional to 15,423.45, 21,284.34 and 8,349.87 is: 11,522.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.45 : 21,284.34 = 8,349.87 : x
  2. Step 2: Convert to fraction form
    15,423.45/21,284.34 = 8,349.87/x
  3. Step 3: Cross multiply
    15,423.45x = 21,284.34 × 8,349.87
  4. Step 4: Simplify right side
    15,423.45x = 177,721,471.27
  5. Step 5: Solve for x
    x = 177,721,471.27/15,423.45
  6. Step 6: Final answer
    x = 11,522.81

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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.