Home / 15,953.70-22,015.25-8,782.22

Finding the Fourth Proportional to 15,953.70, 22,015.25 and 8,782.22

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Solution

The fourth proportional to 15,953.70, 22,015.25 and 8,782.22 is: 12,118.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,953.70 : 22,015.25 = 8,782.22 : x
  2. Step 2: Convert to fraction form
    15,953.70/22,015.25 = 8,782.22/x
  3. Step 3: Cross multiply
    15,953.70x = 22,015.25 × 8,782.22
  4. Step 4: Simplify right side
    15,953.70x = 193,342,812.92
  5. Step 5: Solve for x
    x = 193,342,812.92/15,953.70
  6. Step 6: Final answer
    x = 12,118.99

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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.