Home / 20,648.16-30,973.14-13,672.80

Finding the Fourth Proportional to 20,648.16, 30,973.14 and 13,672.80

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Solution

The fourth proportional to 20,648.16, 30,973.14 and 13,672.80 is: 20,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.16 : 30,973.14 = 13,672.80 : x
  2. Step 2: Convert to fraction form
    20,648.16/30,973.14 = 13,672.80/x
  3. Step 3: Cross multiply
    20,648.16x = 30,973.14 × 13,672.80
  4. Step 4: Simplify right side
    20,648.16x = 423,489,548.59
  5. Step 5: Solve for x
    x = 423,489,548.59/20,648.16
  6. Step 6: Final answer
    x = 20,509.80

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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.