Home / 16,979.32-25,457.36-8,643.21

Finding the Fourth Proportional to 16,979.32, 25,457.36 and 8,643.21

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Solution

The fourth proportional to 16,979.32, 25,457.36 and 8,643.21 is: 12,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,979.32 : 25,457.36 = 8,643.21 : x
  2. Step 2: Convert to fraction form
    16,979.32/25,457.36 = 8,643.21/x
  3. Step 3: Cross multiply
    16,979.32x = 25,457.36 × 8,643.21
  4. Step 4: Simplify right side
    16,979.32x = 220,033,242.77
  5. Step 5: Solve for x
    x = 220,033,242.77/16,979.32
  6. Step 6: Final answer
    x = 12,958.90

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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.