Home / 28,076.09-38,740.60-16,137.20

Finding the Fourth Proportional to 28,076.09, 38,740.60 and 16,137.20

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Solution

The fourth proportional to 28,076.09, 38,740.60 and 16,137.20 is: 22,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.09 : 38,740.60 = 16,137.20 : x
  2. Step 2: Convert to fraction form
    28,076.09/38,740.60 = 16,137.20/x
  3. Step 3: Cross multiply
    28,076.09x = 38,740.60 × 16,137.20
  4. Step 4: Simplify right side
    28,076.09x = 625,164,810.32
  5. Step 5: Solve for x
    x = 625,164,810.32/28,076.09
  6. Step 6: Final answer
    x = 22,266.80

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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.