Home / 11,205.57-15,462.78-6,490.16

Finding the Fourth Proportional to 11,205.57, 15,462.78 and 6,490.16

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Solution

The fourth proportional to 11,205.57, 15,462.78 and 6,490.16 is: 8,955.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,205.57 : 15,462.78 = 6,490.16 : x
  2. Step 2: Convert to fraction form
    11,205.57/15,462.78 = 6,490.16/x
  3. Step 3: Cross multiply
    11,205.57x = 15,462.78 × 6,490.16
  4. Step 4: Simplify right side
    11,205.57x = 100,355,838.93
  5. Step 5: Solve for x
    x = 100,355,838.93/11,205.57
  6. Step 6: Final answer
    x = 8,955.89

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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.