Home / 21,250.72-31,878.60-5,668.48

Finding the Fourth Proportional to 21,250.72, 31,878.60 and 5,668.48

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Solution

The fourth proportional to 21,250.72, 31,878.60 and 5,668.48 is: 8,503.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.72 : 31,878.60 = 5,668.48 : x
  2. Step 2: Convert to fraction form
    21,250.72/31,878.60 = 5,668.48/x
  3. Step 3: Cross multiply
    21,250.72x = 31,878.60 × 5,668.48
  4. Step 4: Simplify right side
    21,250.72x = 180,703,206.53
  5. Step 5: Solve for x
    x = 180,703,206.53/21,250.72
  6. Step 6: Final answer
    x = 8,503.39

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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.