Home / 31,119.98-42,946.12-16,972.94

Finding the Fourth Proportional to 31,119.98, 42,946.12 and 16,972.94

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Solution

The fourth proportional to 31,119.98, 42,946.12 and 16,972.94 is: 23,422.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,119.98 : 42,946.12 = 16,972.94 : x
  2. Step 2: Convert to fraction form
    31,119.98/42,946.12 = 16,972.94/x
  3. Step 3: Cross multiply
    31,119.98x = 42,946.12 × 16,972.94
  4. Step 4: Simplify right side
    31,119.98x = 728,921,917.99
  5. Step 5: Solve for x
    x = 728,921,917.99/31,119.98
  6. Step 6: Final answer
    x = 23,422.96

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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.