Home / 28,128.40-42,197.46-11,497.48

Finding the Fourth Proportional to 28,128.40, 42,197.46 and 11,497.48

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Solution

The fourth proportional to 28,128.40, 42,197.46 and 11,497.48 is: 17,248.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128.40 : 42,197.46 = 11,497.48 : x
  2. Step 2: Convert to fraction form
    28,128.40/42,197.46 = 11,497.48/x
  3. Step 3: Cross multiply
    28,128.40x = 42,197.46 × 11,497.48
  4. Step 4: Simplify right side
    28,128.40x = 485,164,452.40
  5. Step 5: Solve for x
    x = 485,164,452.40/28,128.40
  6. Step 6: Final answer
    x = 17,248.21

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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.