Home / 31,124.20-42,950.90-16,976.74

Finding the Fourth Proportional to 31,124.20, 42,950.90 and 16,976.74

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Solution

The fourth proportional to 31,124.20, 42,950.90 and 16,976.74 is: 23,427.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,124.20 : 42,950.90 = 16,976.74 : x
  2. Step 2: Convert to fraction form
    31,124.20/42,950.90 = 16,976.74/x
  3. Step 3: Cross multiply
    31,124.20x = 42,950.90 × 16,976.74
  4. Step 4: Simplify right side
    31,124.20x = 729,166,262.07
  5. Step 5: Solve for x
    x = 729,166,262.07/31,124.20
  6. Step 6: Final answer
    x = 23,427.63

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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.