Home / 10,981.32-16,467.90-6,815.16

Finding the Fourth Proportional to 10,981.32, 16,467.90 and 6,815.16

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Solution

The fourth proportional to 10,981.32, 16,467.90 and 6,815.16 is: 10,220.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.32 : 16,467.90 = 6,815.16 : x
  2. Step 2: Convert to fraction form
    10,981.32/16,467.90 = 6,815.16/x
  3. Step 3: Cross multiply
    10,981.32x = 16,467.90 × 6,815.16
  4. Step 4: Simplify right side
    10,981.32x = 112,231,373.36
  5. Step 5: Solve for x
    x = 112,231,373.36/10,981.32
  6. Step 6: Final answer
    x = 10,220.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.