Home / 31,480.02-47,223.06-13,940.28

Finding the Fourth Proportional to 31,480.02, 47,223.06 and 13,940.28

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Solution

The fourth proportional to 31,480.02, 47,223.06 and 13,940.28 is: 20,911.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,480.02 : 47,223.06 = 13,940.28 : x
  2. Step 2: Convert to fraction form
    31,480.02/47,223.06 = 13,940.28/x
  3. Step 3: Cross multiply
    31,480.02x = 47,223.06 × 13,940.28
  4. Step 4: Simplify right side
    31,480.02x = 658,302,678.86
  5. Step 5: Solve for x
    x = 658,302,678.86/31,480.02
  6. Step 6: Final answer
    x = 20,911.76

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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.