Home / 19,903.20-29,854.80-5,112.60

Finding the Fourth Proportional to 19,903.20, 29,854.80 and 5,112.60

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Solution

The fourth proportional to 19,903.20, 29,854.80 and 5,112.60 is: 7,668.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,903.20 : 29,854.80 = 5,112.60 : x
  2. Step 2: Convert to fraction form
    19,903.20/29,854.80 = 5,112.60/x
  3. Step 3: Cross multiply
    19,903.20x = 29,854.80 × 5,112.60
  4. Step 4: Simplify right side
    19,903.20x = 152,635,650.48
  5. Step 5: Solve for x
    x = 152,635,650.48/19,903.20
  6. Step 6: Final answer
    x = 7,668.90

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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.