Home / 26,013.60-38,962.80-20,829.60

Finding the Fourth Proportional to 26,013.60, 38,962.80 and 20,829.60

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Solution

The fourth proportional to 26,013.60, 38,962.80 and 20,829.60 is: 31,198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,013.60 : 38,962.80 = 20,829.60 : x
  2. Step 2: Convert to fraction form
    26,013.60/38,962.80 = 20,829.60/x
  3. Step 3: Cross multiply
    26,013.60x = 38,962.80 × 20,829.60
  4. Step 4: Simplify right side
    26,013.60x = 811,579,538.88
  5. Step 5: Solve for x
    x = 811,579,538.88/26,013.60
  6. Step 6: Final answer
    x = 31,198.28

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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.