Home / 31,801.64-47,638.82-19,144.36

Finding the Fourth Proportional to 31,801.64, 47,638.82 and 19,144.36

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Solution

The fourth proportional to 31,801.64, 47,638.82 and 19,144.36 is: 28,678.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,801.64 : 47,638.82 = 19,144.36 : x
  2. Step 2: Convert to fraction form
    31,801.64/47,638.82 = 19,144.36/x
  3. Step 3: Cross multiply
    31,801.64x = 47,638.82 × 19,144.36
  4. Step 4: Simplify right side
    31,801.64x = 912,014,720.06
  5. Step 5: Solve for x
    x = 912,014,720.06/31,801.64
  6. Step 6: Final answer
    x = 28,678.23

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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.