Home / 28,155.84-38,856-16,824.96

Finding the Fourth Proportional to 28,155.84, 38,856 and 16,824.96

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Solution

The fourth proportional to 28,155.84, 38,856 and 16,824.96 is: 23,219.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.84 : 38,856 = 16,824.96 : x
  2. Step 2: Convert to fraction form
    28,155.84/38,856 = 16,824.96/x
  3. Step 3: Cross multiply
    28,155.84x = 38,856 × 16,824.96
  4. Step 4: Simplify right side
    28,155.84x = 653,750,645.76
  5. Step 5: Solve for x
    x = 653,750,645.76/28,155.84
  6. Step 6: Final answer
    x = 23,219.01

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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.