Home / 31,047.75-42,845.90-16,900.70

Finding the Fourth Proportional to 31,047.75, 42,845.90 and 16,900.70

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Solution

The fourth proportional to 31,047.75, 42,845.90 and 16,900.70 is: 23,322.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,047.75 : 42,845.90 = 16,900.70 : x
  2. Step 2: Convert to fraction form
    31,047.75/42,845.90 = 16,900.70/x
  3. Step 3: Cross multiply
    31,047.75x = 42,845.90 × 16,900.70
  4. Step 4: Simplify right side
    31,047.75x = 724,125,403.40
  5. Step 5: Solve for x
    x = 724,125,403.40/31,047.75
  6. Step 6: Final answer
    x = 23,322.96

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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.