Home / 22,157.32-30,581.86-12,731.08

Finding the Fourth Proportional to 22,157.32, 30,581.86 and 12,731.08

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Solution

The fourth proportional to 22,157.32, 30,581.86 and 12,731.08 is: 17,571.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,157.32 : 30,581.86 = 12,731.08 : x
  2. Step 2: Convert to fraction form
    22,157.32/30,581.86 = 12,731.08/x
  3. Step 3: Cross multiply
    22,157.32x = 30,581.86 × 12,731.08
  4. Step 4: Simplify right side
    22,157.32x = 389,340,106.21
  5. Step 5: Solve for x
    x = 389,340,106.21/22,157.32
  6. Step 6: Final answer
    x = 17,571.62

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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.