Home / 31,328.20-47,003.10-13,810.60

Finding the Fourth Proportional to 31,328.20, 47,003.10 and 13,810.60

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Solution

The fourth proportional to 31,328.20, 47,003.10 and 13,810.60 is: 20,720.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,328.20 : 47,003.10 = 13,810.60 : x
  2. Step 2: Convert to fraction form
    31,328.20/47,003.10 = 13,810.60/x
  3. Step 3: Cross multiply
    31,328.20x = 47,003.10 × 13,810.60
  4. Step 4: Simplify right side
    31,328.20x = 649,141,012.86
  5. Step 5: Solve for x
    x = 649,141,012.86/31,328.20
  6. Step 6: Final answer
    x = 20,720.66

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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.