Home / 28,197.74-38,911.21-15,448.39

Finding the Fourth Proportional to 28,197.74, 38,911.21 and 15,448.39

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Solution

The fourth proportional to 28,197.74, 38,911.21 and 15,448.39 is: 21,317.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,197.74 : 38,911.21 = 15,448.39 : x
  2. Step 2: Convert to fraction form
    28,197.74/38,911.21 = 15,448.39/x
  3. Step 3: Cross multiply
    28,197.74x = 38,911.21 × 15,448.39
  4. Step 4: Simplify right side
    28,197.74x = 601,115,411.55
  5. Step 5: Solve for x
    x = 601,115,411.55/28,197.74
  6. Step 6: Final answer
    x = 21,317.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.