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Finding the Fourth Proportional to 28,155, 38,850.51 and 16,222.23

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Solution

The fourth proportional to 28,155, 38,850.51 and 16,222.23 is: 22,384.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155 : 38,850.51 = 16,222.23 : x
  2. Step 2: Convert to fraction form
    28,155/38,850.51 = 16,222.23/x
  3. Step 3: Cross multiply
    28,155x = 38,850.51 × 16,222.23
  4. Step 4: Simplify right side
    28,155x = 630,241,908.84
  5. Step 5: Solve for x
    x = 630,241,908.84/28,155
  6. Step 6: Final answer
    x = 22,384.72

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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.