Home / 15,911.50-21,957.87-8,838.58

Finding the Fourth Proportional to 15,911.50, 21,957.87 and 8,838.58

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Solution

The fourth proportional to 15,911.50, 21,957.87 and 8,838.58 is: 12,197.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.50 : 21,957.87 = 8,838.58 : x
  2. Step 2: Convert to fraction form
    15,911.50/21,957.87 = 8,838.58/x
  3. Step 3: Cross multiply
    15,911.50x = 21,957.87 × 8,838.58
  4. Step 4: Simplify right side
    15,911.50x = 194,076,390.62
  5. Step 5: Solve for x
    x = 194,076,390.62/15,911.50
  6. Step 6: Final answer
    x = 12,197.24

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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.