Home / 31,125.30-46,615.05-21,210.90

Finding the Fourth Proportional to 31,125.30, 46,615.05 and 21,210.90

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Solution

The fourth proportional to 31,125.30, 46,615.05 and 21,210.90 is: 31,766.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,125.30 : 46,615.05 = 21,210.90 : x
  2. Step 2: Convert to fraction form
    31,125.30/46,615.05 = 21,210.90/x
  3. Step 3: Cross multiply
    31,125.30x = 46,615.05 × 21,210.90
  4. Step 4: Simplify right side
    31,125.30x = 988,747,164.05
  5. Step 5: Solve for x
    x = 988,747,164.05/31,125.30
  6. Step 6: Final answer
    x = 31,766.67

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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.