Home / 31,851.64-47,809.68-13,142.84

Finding the Fourth Proportional to 31,851.64, 47,809.68 and 13,142.84

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Solution

The fourth proportional to 31,851.64, 47,809.68 and 13,142.84 is: 19,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,851.64 : 47,809.68 = 13,142.84 : x
  2. Step 2: Convert to fraction form
    31,851.64/47,809.68 = 13,142.84/x
  3. Step 3: Cross multiply
    31,851.64x = 47,809.68 × 13,142.84
  4. Step 4: Simplify right side
    31,851.64x = 628,354,974.69
  5. Step 5: Solve for x
    x = 628,354,974.69/31,851.64
  6. Step 6: Final answer
    x = 19,727.55

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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.