Home / 15,913.25-21,957.85-9,197.58

Finding the Fourth Proportional to 15,913.25, 21,957.85 and 9,197.58

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Solution

The fourth proportional to 15,913.25, 21,957.85 and 9,197.58 is: 12,691.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.25 : 21,957.85 = 9,197.58 : x
  2. Step 2: Convert to fraction form
    15,913.25/21,957.85 = 9,197.58/x
  3. Step 3: Cross multiply
    15,913.25x = 21,957.85 × 9,197.58
  4. Step 4: Simplify right side
    15,913.25x = 201,959,059.01
  5. Step 5: Solve for x
    x = 201,959,059.01/15,913.25
  6. Step 6: Final answer
    x = 12,691.25

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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.