Home / 28,820.28-39,772.62-16,885.56

Finding the Fourth Proportional to 28,820.28, 39,772.62 and 16,885.56

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Solution

The fourth proportional to 28,820.28, 39,772.62 and 16,885.56 is: 23,302.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.28 : 39,772.62 = 16,885.56 : x
  2. Step 2: Convert to fraction form
    28,820.28/39,772.62 = 16,885.56/x
  3. Step 3: Cross multiply
    28,820.28x = 39,772.62 × 16,885.56
  4. Step 4: Simplify right side
    28,820.28x = 671,582,961.37
  5. Step 5: Solve for x
    x = 671,582,961.37/28,820.28
  6. Step 6: Final answer
    x = 23,302.44

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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.