Home / 31,236.96-46,887.84-20,920.80

Finding the Fourth Proportional to 31,236.96, 46,887.84 and 20,920.80

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Solution

The fourth proportional to 31,236.96, 46,887.84 and 20,920.80 is: 31,402.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,236.96 : 46,887.84 = 20,920.80 : x
  2. Step 2: Convert to fraction form
    31,236.96/46,887.84 = 20,920.80/x
  3. Step 3: Cross multiply
    31,236.96x = 46,887.84 × 20,920.80
  4. Step 4: Simplify right side
    31,236.96x = 980,931,123.07
  5. Step 5: Solve for x
    x = 980,931,123.07/31,236.96
  6. Step 6: Final answer
    x = 31,402.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.