Home / 16,979.20-23,431.26-9,426.68

Finding the Fourth Proportional to 16,979.20, 23,431.26 and 9,426.68

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Solution

The fourth proportional to 16,979.20, 23,431.26 and 9,426.68 is: 13,008.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,979.20 : 23,431.26 = 9,426.68 : x
  2. Step 2: Convert to fraction form
    16,979.20/23,431.26 = 9,426.68/x
  3. Step 3: Cross multiply
    16,979.20x = 23,431.26 × 9,426.68
  4. Step 4: Simplify right side
    16,979.20x = 220,878,990.02
  5. Step 5: Solve for x
    x = 220,878,990.02/16,979.20
  6. Step 6: Final answer
    x = 13,008.80

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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.