Home / 16,978.87-23,429.79-9,424.75

Finding the Fourth Proportional to 16,978.87, 23,429.79 and 9,424.75

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Solution

The fourth proportional to 16,978.87, 23,429.79 and 9,424.75 is: 13,005.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,978.87 : 23,429.79 = 9,424.75 : x
  2. Step 2: Convert to fraction form
    16,978.87/23,429.79 = 9,424.75/x
  3. Step 3: Cross multiply
    16,978.87x = 23,429.79 × 9,424.75
  4. Step 4: Simplify right side
    16,978.87x = 220,819,913.30
  5. Step 5: Solve for x
    x = 220,819,913.30/16,978.87
  6. Step 6: Final answer
    x = 13,005.57

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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.