Home / 10,989.35-15,165.35-5,953.58

Finding the Fourth Proportional to 10,989.35, 15,165.35 and 5,953.58

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Solution

The fourth proportional to 10,989.35, 15,165.35 and 5,953.58 is: 8,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.35 : 15,165.35 = 5,953.58 : x
  2. Step 2: Convert to fraction form
    10,989.35/15,165.35 = 5,953.58/x
  3. Step 3: Cross multiply
    10,989.35x = 15,165.35 × 5,953.58
  4. Step 4: Simplify right side
    10,989.35x = 90,288,124.45
  5. Step 5: Solve for x
    x = 90,288,124.45/10,989.35
  6. Step 6: Final answer
    x = 8,215.97

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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.